In my career as an actor there is a catchphrase that Scofield always says often in regards to his brother 'Have a little faith.' In my own career as an actor there were times when I was the only one who believed in myself in the face of the odds.
What starts the process really are laughs and slights and snubs when you are a kid. If your anger is deep enough and strong enough you learn that you can change those attitudes by excellence personal gut performance.