Either you keep moving or you fall down. He that never changes his opinions, never corrects his mistakes, will never be wiser tomorrow than he is today. To avoid criticism, do nothing, say nothing, be nothing. The whole point of getting things done is knowing what to leave undone. If you don't invest very much, then defeat doesn't hurt very much and winning is not very exciting.
Worry takes as much time as work and pays less.
What's right isn't always popular, what's popular isn't always right. We have strange and wonderful relationship. You're strange and I'm wonderful. Complain to one who can help you. It's not the mountain we conquer, but ourselves.