GSP on Belief in Yourself

Georges St-Pierre talks about believers and disbelieves in his book The Way of the Fight:

You need belief that you can make it, so you carry confidence with you everywhere you go. And you need disbelief and disbelievers, people who don't think you can make it. Those people are incredibly important because they're the ones who inspire you to do the work, even when you don't feel like it.

Click for more GSP quotes.