Is it over or is it a new beginning? Either, neither or both are right. But which part of the question you focus on determines whether you have a new start or just the memory of what once was. Learn from yesteday(s), but consider the "end" of something an opportunity to pursue the new thing. Life goes on and so should you.
" “Remember not the former things,
nor consider the things of old.
Behold, I am doing a new thing;
now it springs forth, do you not perceive it? I will make a way in the wilderness