Wow...Really good question xD
I don't really know if I would want to change things about my life...I mean, I've had some really bad things happening to me, but I don't want to change that...This is my life, it's the ups & downs I had to go through that made me what I am now, I'm a little broken maybe, but I like who I am & I'm proud of it...
The only thing I would change if I could, is I would have spent more time with my mother Allah Yarhamha & I would have done more stuff with her...Spend time with your loved ones, your pc will be here tomorrow, the new shop will still be open next week...But your loved ones might go to a different place tonight, a place where you can no longer tell them how much you care about them, because they can no longer hear you...Family & friends are the joy of life ^^