Gotta be square with you, bros... I'm not happy and haven't been for a long ass time. I have no idea if it's my workload, my deteriorating social/dating life or what but things just seem to be shit all of the time.
Fill me in. I've tried talking to head shrinkers and stuff but they put me into rage mode so fast that I actually wonder how I haven't ended up going on a rampage and smashing their office into smithereens.
Another thought - I don't know how old you are, but it might be a function of your age. Very few people in the late teens -> mid 20s are happy. I know I wasn't.
It wasn't until my early 30s that I learned to relax and enjoy life. But then again, it's not guaranteed. I know plenty of people in their 30s and 40s who excel at making themselves miserable.
Something else you said struck a chord - about not wanting the instability you had as a child. That there may be giving you some problems, because it's an "away from" motivation driven by fear. The problem with those sorts of motivations is that they are like a nebulous monster chasing you in your dreams. You're never 100% confident that you've escaped them.
It's a dilemma, because they are very good at giving you the drive to be successful in the first place... but if you're letting that drive control you rather than vice versa, you'll never be at peace.