"What if?" "If only?" "could have" should have" are all now banned from my vocabulary!
I don't want to hear them any more. Could there be any more destructive negative things to say? The more you think on these lines the more you are suggesting that what you have could be better, well I'm quite happy with my lot thanks. Ok, it might not be perfect but its mine.
Yes things could have been different but being different doesn't mean that they would necessarily be any better.
I have a relatively good lifestyle, lovely family and lovely friends...what more could I ask for