In times like this, I'd be so glad that I move on just as quickly as I do. It may not be a trait to be proud of, but it seems helpful at times.

I like what you've chosen to do with the time that you could otherwise have spent running things over in your head. By the way, not all friendships last a lifetime. Some are for a season, so it's only wise to enjoy what you have with people and appreciate the role they play in your life and if it comes to it, bid them farewell when it' gets to that.
It's not easy as stated, but I trust you'll fare well anyway.