They say you should hang on to your friends for life. But some, you need to ditch pronto.
The contender
He worked hard to get better grades than you in school, tried to win all the girls' attention, compared notes on who took the better holiday, and is now comparing your kid with his. Why are you still friends? Healthy competition between friends keeps both parties motivated. But if the camaraderie is about outdoing each other, your friend is your biggest competitor. So, tell him, ciao.