Feeling let down?
When someone lets you down, betrays you, or attempts to humiliate you in some way, we can rot in our own plans of revenge, ready for whichever karma comes next. Or you can tilt your head up, roll up your sleeves, decide that this clearly is not someone you should be associating with. Is it because they're an awful person, or their competitiveness brings out a nasty side? It could be. Or it could simply be that you are choosing your friends, or choosing your associates with much more tact. Choose people who are not afraid? People who will not go out of their way to bring you down so they can validate their own self esteem. We are who we are. We need people around us who can see our strengths and help us build upon them.