- Happy Past Year? Happy New Year! Happiness is the driving force behind most endeavors for all people beyond the needs of subsistence. Even if many believe that money makes the world go round, the thrive for happiness is soon overriding the comparatively simple pleasures money can buy. A Bistro in Berlin in the middle of a park has the entry reception entitled „zum Glück“. An excellent wish for the New Year and a chance to review the „glückliche Momente“, the happy moments of last year.
Happy Runner
The happy runner is a nice example of how hard it maybe to experience happiness through running. The so-called runner’s high is available to everybody, if you manage to run long enough already. Most predictions put the threshold distance at about a 1 hour run. The reward for this effort is a special feeling that exceeds the pain or it makes you forget or supress the pain at least temporarily. Special reinforcements can be achieved through the big city runs in exciting places with thousands of people cheering you on. This has become a big business as well. Training for such an event might raise your feeling of happiness substantially. The chemistry of the endogenous production of stimulants of happiness in our body has been enlightened substantially in recent years (partly as doping control). Most of the brain active drugs our body can produce itself, although this involves a lot of physical and mental effort. The rewards are pretty healthy for most runners contributing to their basic level of happiness. Running outside, has contributed more to happiness for me more than the same exercise on a treadmil. Maybe, the environment is part of the happy runner’s high effect. 
Happy Biology
At first glance happiness from a biological perspective is easy to understand. Its hormones, stupid, that regulates it all. Only problem, there are many of them that interact and, apparently, a lot depends on the right dosis and duration of exposure or deficiency. Oxytocin deficiency seems to be a corollary of anxiety and lack of pro-social behavior, potentially making people less happy – to put it bluntly. There are other complex interactions between hormones not only in the circadian circle of humans like for cortisol, but also related to differential reactions to stress. Genetics and epigenetics are involved as well stress regulation and early exposition to stress during the life course has longer lasting consequences later on. How much stress is good for you? Climbing Mountains induces physical stress, but most people report lasting happiness referring back to such singular events. Hormones seem to play tricks with us as well.
Some time after the novel “Klara and the Sun“, endocrinologists have documented the positive effect of a robot on oxytocin levels in humans. Improvements to mental health and well-being are apparently easy considering that oxytocin is a driver of feeling happy as well. Maybe we should take our depressors and drivers of oxytocin more seriously to be “biologically” happy.
(Image: Extrait Frans Hals 1660, Catharina Hooft and her nurse. Exhibition Gemäldegalerie Berlin 2024) 
Happy Employee
The research on happiness, subjective well-being or overall satisfaction with your life is also an empirical question. Analyses of being happy donot only focus of overall happiness, but look much more into the details of happiness. Beyond the tricky longitudinal observations of happiness it is common scientific practice to deal with subdomains of happiness like satisfaction of employees with their job, satisfaction with one’s job beyond the honeymoon and hangover effect, best known from family studies.
Each of those subdomains has a significant effect on overall happiness. The novel “Happy Life” by David Foenkinos is an interesting example which focuses mainly on the subdomains of job satisfaction, satisfaction with private and romantic partners as the major domains of a happy life. As developed in the novel, people make job changes to re-orientate professional careers or reset their private life. A low point on the happiness scale in one domain might be compensated by higher levels in another domain. These impact from one domaine to another might have substantial time lags involved as well. More drastic resets (à la Foenkinos) can be avoided through focus on other subdomains of overall happiness as well.
How happy are you with your housing situation, neighborhood, your pet, your physical health? There a multiple +/-spill-over effects to overall happiness. Reading a novel might be one as well, just take time reserved to yourself.(Image BnF expo “women in sport”, 20024)
Happy Maths
The link of maths and happiness is not straightforward. Individual accounts of a happy (euphoric) or unhappy (dismal) life are mostly referred to psychologists for treatment. The biografies (documentaries) or fictional biografies told in novels or cinema allow to trace the changing moods of the personalities over time. This resembles life course research. In happiness research social scientist ask questions like “Overall, how satisfied are you with your life“. Measured over time or coded from biografies this allows to reconstruct happiness trajectories. At this point the maths of happiness enter the stage. Long periods of observations yield interesting patterns of curved lines, rarely simple linear trajectories. Social scientist speak of within person variability in contrast to between persons variability. After all, the (short-term superior) happiness of your neighbor might simply be due to the fact that they are doing drugs.
Whatever, try to remember a bit of your high school maths and the bore to deal with “curve discussions or sketching” beyond the manifold shapes of your classmates. Lots of interesting information derives from growth or decline rates, tangent lines, stationary or inflection points. Different starting points or so-called intercepts vary between individuals as well as he potential to cross the Zero-line on one of the axes. Additionally, in geometry you would compare syncronicity of curved lines as well as forms of symmetry for the curve(s). This will simplify or comlexify your perspective on the happiness trajectories of people or characters in a novel.
We are so used to narratives or videoss with a happy end, yet we appreciate the complex trajectories and (multiple) troughs main characters have to pass. Novels teach us about tricky inflection points and subsequent trajectories as well. The maths of happiness, however, is rather simple in comparison.
(Image from Toronto District Christian High School -pdf p.207). 
Happy Life
There are countries in this world that want to prescribe to their citizens what constitutes a happy life. Religious beliefs are another powerful instigation of what may be called a happy life now or in the future. Most people on earth, however, have their very own idea about happiness and how to get closer to this moment, phases or destiny of their lives.
Happy life is also the title of the novel or „une fable optimiste“ by David Foenkinos with the almost programmatic title „La vie heureuse“. It has been qualified as a bit absurd, but at the time of celebrating 100 years of surrealism, this fits into the surreal world episodes and narratives that surround us. The novel is full of ups and downs for the major characters, which reflects the inevitable links of happy relative to unhappy moments in life. The pseudo experience of death allows to press a kind of reset button in life after which love and life can start afresh. This might not work for all us as Foenkinos seems to tell us with the choice of the dedication and citation of Charlotte Salomon „On devait même, pour aimer plus encore la vie, être mort une fois“. Charlotte Salomon, however, lives on through her formidable artistic work accomplished in her short life.
Happy
“Don’t worry, be happy”. Most people might remember the song of the late 1980s by Bobby McFerrin. Very popular at that time already, it simply took a popular phrase from an Indian mystical preacher and then take this and compose an easy-going melody. Simplicity is the art here, not the complex arrangement of voices or orchestration. Similar to the shifting mood of the late 1980s when eventually even the Berlin wall came down, we are still in need of finding simplicity again.
This is a kind of a good starting point for the visit of the happiness exhibition in Brussels. At the beginning of the exhibition, you do a bit of reading on the neuro-psychological and sociological foundation of happiness to then move on to the more fun part of the exhibition: immergence into rooms of light and colours. Sound complements the visual experience decently. It is interesting to witness that children are immediately seduced by the joyful atmosphere and feel very comfortable in the rooms. Adults are more reluctant to let lose. Drop defences and walls we have become used to and just let go of our concerns of day-to-day hustle. “Don’t worry, be happy”, at least for a while. You deserve it.
The entry price of 16€ at the door is a not-to-be underestimated as an impediment to an entry into the world of happiness in Brussels. Children are free of charge, most of them are happy anyway if their parents spend time together with them. Happiness for many in society remains still a challenge. Art could contribute more in this direction as well. On the “Mont des Arts” happiness is near, it takes just some time and you are very likely to feel the effect of the artist’s creation through splendid interior design taking our senses and emotions seriously. 
Strand
Strand kann so schön sein. Am besten mit viel Sonnenschutz. Das können dann auch schon mal Wolken sein. Das reduziert die UV-Strahlung ganz erheblich. Warum gerade dann besonders wenige Personen am Strand anzutreffen sind, werde ich nie verstehen. Regenschauer und Regenbogen verbessern die Luft und sorgen für Glücksgefühle. Wolkenformationen sind nicht nur attraktiv für romantische Personen, sondern auch für Hobby- Meteorologen. Das sind wir doch irgendwie im tiefsten Inneren alle mit dem täglichen Blick auf 1-2 Wetterapps für die Prüfung der Wetteraussichten. Beim Walking am Strand ist eben etwas für alle Sinne dabei. Cryothérapie inklusive. 
Moped
Im Osten Deutschlands schwören viele Moped Enthusiasten auf ihre Schwalbe. Italienische Mopedliebhabende wollen immer nur Vespa fahren. In den 70er Jahren gab es bereits eine kleine platz- und energiesparende Alternative. Das war die Honda Dax. Als Moped zu haben mit 50cm³ Motor bis zum Motorrad mit 125cm³ bekannt als Monkey-bike. Der 4-Takt-Motor erlaubte geräuscharme, niedrige Drehzahlen. Dazu gab es eine Fliehkraftkupplung, besser bekannt als Halbautomatik mit Fußschaltung. Tanken mit Benzin ohne Ölbeimischung, was die Mobilität einfacher machte und mal vom Reservekanister getankt werden konnte. Reichweite ohne nachtanken, ça 70 km.
Im Juli 2023 habe ich noch einige Exemplare in einem autoberuhigten Ferienort an der Nordsee gespottet. Das Motorrad wird 2023 mit 1,5 Liter/100km ausgewiesen. Eher zeitgemäß ist die elektrische Variante, die sich sauber in der Garage oder direkt an der Solarzelle laden lässt. Das hat ungefähr ein halbes Jahrhundert gedauert. Umweltbewusstsein fällt nicht vom Himmel. Der Elektromotor bietet mit 800W. Das ist mehr Kraft als ein Pedelec. Da steht einem Ausflug zu zweit, nicht zu weit, nichts mehr entgegen. Bevor die Emotionen die Überhand nehmen, mache ich meinen täglichen Spaziergang. 
