I think past shouldn't never be changed. If people had this capacity, everything would be so silly. Past are lessons, maybe memories, maybe fuck up, but it was however the thing that made you as you are. You can't make one step further if you weren't behind lately. But if I could cahnge anything in my past, I would cahnge just one thing: I wouldn't lost someone (a friend)... not by death, but in life. Now I remember when he said :"Yes,the other world must be a better place for u and I." I'll do my best not to do the same again. I hope you won't do that too and regret in the future.