And the same person can be unhappy for different reasons no matter what choices they make. After a few of those, one starts to distrust almost any decision-making framework :)

If it helps (and it probably doesn’t, much) try not to beat yourself up too much. It’s hard to know which big decisions are mistakes and which are great, except in hindsight. I’ve made a few that turned out well; a few that turned out poorly; some that were terrible except for a twist of fate that made them great; and some that were great except for a twist that ruined them.

There’s a lot of rand() going on in life, after all.