For me, not being ambitious enough/not taking enough risks/opportunities in life.
Basically, I just feel like I need to grow the fuck up. Lolz.
I've just turned 21, but I feel like I've let too many opportunities slip by me already. I'm in college, yadda yadda, but I still feel far too dependent on my parents and I hate it. Not sure if typical young adult angst or legitimate concern.