I wouldn't, really. I mean I can sit and wish that this or that had been different but ultimately it's all part of who I am at this moment. No regrets, just things I learned from.
There's things I would change about myself, but they are things I CAN change - they're not impossible - I just haven't got to the place in myself where I'm willing or capable to do that yet. And all the getting there is part of the learning too. So if I could suddenly abracadbra it it would feel like cheating on a test.
Although one thing I would abracadbra: A jackpot-winning lottery ticket. And powers of invisibility.