Jealousy?

Jealousy is the art of counting someone else's blessings instead of your own.

Ask yourself this : "What's something I have that everyone wants?"

Mistake

Doing something and getting it wrong is at least ten times more productive than doing nothing. Every success has a trail of failures behind it, and every failure is leading towards success. You end up regretting the things you did not do far more than the things that you did.