It’s tempting to use all the people who didn’t believe you as fuel to your fire.
The trouble is that whatever you end up creating will be in reaction to your past — instead of a product that represents the future you want to design for yourself and the people you care about. If you're honest, you're exhausted from the constant need of antagonist to prove wrong. Plus, they don’t care about you anyway.
Here’s an alternative: Create for the people who see and appreciate you just as you are. They deserve your attention, effort and gratitude. Not the assholes who disrespect, overlook and abandon you.
Do your best work because it fulfills you and generates an impact in the lives of people who find value from your skills, gifts and talents. You’ll likely find it’s far more rewarding (and relaxing) in the long run.