Hmm..
My family moved a lot, parents divorced, yadda yadda. Eventually had to move again when I was 14 to a very small backwards ass town. Hard to make friends since everything was so racially divided. So I became a real loner then. I don't really regret that, but I went from being a top scorer to just not giving a fuck anymore about school. That's mistake one.
When I was 16 I got arrested, and did 4 months in Juvie. I had to go to an alternative school as a result because I had a felony. But since I was in CPC(college prep) classes, basically that semester in alternative school was a waste, plus the time I spent in Juvie. Then I had to take a whole extra course load to graduate with my class, but I managed that. Was a big relief. Juvie & not doing well enough in HS, mistake two.
Went to college, broke up with my gf briefly (she brought it up), at which point she fucked someone else from our school like a couple days later. We got back together and she told me about it, and I was pretty furious for probably 6 months to a year. Just a nagging resentment or whatever. I passed up too many sex opportunities back in my teens, and that shit happens. That's mistake three & four (break up, and passing up).
I did horrible in college (was aimless), and just left. I should've joined the military but I stayed with my girl. During that time I was some hermit bastard for a year back with my dad, and she almost left me. May have fooled around on me, don't know. She's admitted to some things, but after the college breakup thing, she knew better to admit to sleeping with someone else. Mistake five and six. (college fuck up, and lazying around, not joining military)
At 20 or so I went to community college for a year, then my dad wanted me to work so I quit school and worked at a state prison for a year. Evidently that was good enough (I never missed work), and I was able to go back to community college. Finished that at 23. Got my Associates in computer networking, got several industry certifications. So no fuck ups there, just could've done a bit better in school. By this time my relationship is going great.
Now I'm back in university, had a rough time adjusting to it, but I prevailed. I've managed to turn my life around, I'm overall happy. Just a few years behind. I turn 24 this fall. I'd say the last 2 years have been good.
I would say though, fucking up has kinda shaped me as a person, but damn, I could've done better.