100% this!!! I'm an author for Pluralsight and I record voice-overs for my online training courses. I was also just picked to be a speaker at a very large tech conference in Oct!! I was that kid in school who stuttered during presentations and was bullied and mocked for it, even by my teachers at times. Don't set out to prove yourself to people who bullied you. Listen to people who want to raise you up and show them what you can do!!