Those people you are trying to win over aren't worth winning over.
If you win ... They'll say you got lucky.
If you lose ... They'll call you a loser.
They will smile in your face and pray for your downfall in the same breath.
Instead of spending time trying to win people over that are going to resent you no matter what...
Forget about them and focus on being the best you possibly can and winning as big as you can.
Make them eat their own shit with your undeniable results.
Eventually you'll forget their names.
...But they'll never forget yours.