90% of the people seek perfection in some form in their lives. But they don't get it. So they become sad and depressed.
90% of the remaining try to create perfection instead. But they fail. So they become frustrated; sometimes angry.
90% of the remaining create something which some people find perfect. They receive appreciation. So they become proud and boastful.
And the rest?
Well, they just create. And forget. And create again. Some of their creations are imperfect, some are incomplete; most of them are criticized by others, and only a few are appreciated. But nothing moves them. They create not to achieve, but to build. These are the happy people.
Children are happy. 99.9% of the adults are not.
image from google search; more precisely - from https://www.angelibebe.com/blog/2016/05/secrets-happy-children/