Хороший текст о том, откуда пошли все эти темы про "будь веселым", "всегда улыбайся" и прочее тошнотное "позитивное мышление" из поп-психологии. Пишут, что из устава организации бойскаутов. А также о том, чем плох весь этот культ ванильного позитивного мышления:

Cheerfulness conceived as a virtue – à la Boy Scout Law – instead of a spontaneous feeling is a pretence. It’s not an action but it is an act. Whistling while you work might be worth defending, but forcing yourself to smile when you don’t feel like it amounts to lying to the people around you. ‘Fake it till you make it’ has brutal consequences when applied to the emotions. When conceived as the attempt to trick others into thinking that you feel cheery, cheerfulness is far from a virtue. It’s a vice. It falls on the deficiency end of the spectrum of trust. Too much trust is called naïveté, and is a vice of excess. But cheerfulness is just as bad. It confesses: I don’t trust you with my darkest feelings; I don’t think you are responsible enough to handle my inner life. Forced cheerfulness is a denial of life. All experiences taste different, and if we force a smile through the sour ones, we are not living honestly. We might want to lock out certain people from our fragile hearts, but cheerfulness is an equal-opportunity vice; it keeps even my loved ones out of reach. Whoever gets our cheery selves does not get our true selves.

В общем, это все - отказ в доверии и гибель подлинной коммуникации. Поэтому испытывать грусть, одиночество, злость и тревогу - это нормально. И нормально - не скрывать этого, выдавливая из себя "позитив".

https://aeon.co/essays/cheerfulness-cannot-be-compulsory-whatever-the-t-shirts-say

Against cheerfulness

Practising the Greek virtues of wisdom and courage is one thing. But being cheerful the American way borders on psychosis
| Aeon