If you could have one do-over in life, what would it be and why?

I've got a few .... but if I hadn't chosen my exhusband, I'd never have my children... I'd have stuck to school right after high school... traveled at a younger age.... never had gotten a DUI.... umm... never dated my ex boyfriend (he caused too much drama).... had gotten my tummy tuck last year....
"stuff"
But, I can't have live in the past anymore.. I've gotta keep it moving forward and continue to succeed