It is in the character of very few men to honor, without envy, a friend who has prospered.
-Aeschylus
Watch the reactions of people around you when you win. Not everyone is happy that you have won. They have their reasons, but beware of them. Look to your own heart when people around you win. Learn to be supremely happy for them when they win, even if you wish it would have been you with that success. Your time will come. For now, celebrate their victory.