Sorry, why can't you fix hating yourself? You totally can. You "fix" it by striving, going after and accomplishing the goals that will get you where you want to be. I "fixed" hating myself. Used to hate myself, don't anymore. So I "fixed" that problem I had. So why can't everyone else? If you have the desire, the willpower and the goals set, you can do just about anything.
As for the question. I'm also with Richard, not changing a thing. My life sucked growing up....hell, it got worse every year, but I wouldn't be who I am today. Could i have been a better person, more successful, more money, more whatever? Sure, but there's just as much likelihood that I would have been worse. So fresia it, my past can stay where it belongs....in the past. It can't haunt me or harm me because I have moved on from all that honeysuckle and refuse to go back to what I once was. It's all about being better than I was yesterday.