Mostly it's everyday stuff, stuff I used to stress about now I'm like, eh it'll get done. Social acceptance is another one, I used to worry about people liking me and couldn't get past it if someone I thought I was on good terms with didn't like me. Now I worry about that much less, don't get me wrong I still want people to like me, but if they don't I can just accept it and move on.

As an example, there was a guy in my office who hated me, I was never anything but nice to him, but he just hated me. The problem was we regularly had to work together on things. In the past I would have been going out of my way to try and get him to like me and find out what it was that he had against me. Now, ok you don't like me, let's just keep the interactions professional and to the point, and I'll just leave you alone the rest of the time.

Basically you just learn to accept yourself and be happy with the good people and events in your life, and learn to just accept and move on from the others.