All I'll ever need

So why is it exactly that I can't do anything right the first time? My whole life has been like that! What the heck? I would really like to figure it out. Maybe I just haven't found something I'm good at. That might be it. Or maybe it's my personality, can you change that? I know I'm pretty carefree and that doesn't comply with being percise on things. It's weird looking back through my life I really am hard on myself. Things that I didn't finish or don't think I did good enough for myself I really regret. And it just keeps happening. I don't get it. I wish it could just stop being that way, does life ever slow down enough to let you help yourself?