I admit, I really miss how things used to be. But I can also admit, that I've accepted the fact that things changed.
One lesson we must all learn in our lives is that things can always change. Sure, we will always remember how things used to be, and we will sometimes lose sight of our future because we want to turn around and re-live moments from our past, but there must come a time in which we accept that things have changed. One thing that we must all note in life is that we cannot undo the parts of our lives that have changed, and that may cause us to regret now.