Not to be all morbid or anything and I know your not supposed to regret- does no good. But I think honestly we all have something we regret...
My biggest is not finishing school and dropping out in year 10. I pay for it everyday! (so note to the youngsters on here- stay in school!)
My other regret was moving to the big smoke and leaving my childhood dog behind with my mum and never seeing him again due to an unfortunate accident
So is there something you wish you could go back and do over?