I'm sorry about the friends turning away. Hmmm. What to think of that might offer hope. Sometimes when old friends go, that makes space for new friends ... who might be better than the old.
Losing sleep over the people you have lost is what makes you human. If you didn't lose any sleep at all, I would question your humanity. But there is a point where you have to dampen the obsession of loss and try to find brighter spots. Of course, I am one to talk. A women left me and it trashed me for 2 years. But ... she came back to me and now the world is all rosey again. But if she wouldn't have come back? How much longer would I have been trashed? Hmmmm.