From Men's Health: Trusting my own instincts has led me to great places. When I was younger, someone telling me I couldn't do something was like saying, 'Try.' You get mad at them and yourself, because they make you think, I don't know if I really can do it. Maybe they're right. Then the anger feeds you, and next thing you know, you've done exactly what they said you wouldn't do, and a little more.