Ceej, actually, according to some versions of cosmology, the many worlds hypothesis hold up pretty well. So there is a dimension where you changed anything you wanted to change.

Anyway, I'm not sure that changing the past would change much.

If Abe Lincoln had lost the election, I think another event would have still triggered the civil war. There just isn't a way to make history radically different. I don't think it would work for your personal history either. Eventually you'll end up back where we are.