Advice for Entrepreneurs

Marc Andreessen has just published the fourth of his of his Guides to Startups. (First, second, third installments.)

From Adventures in Capitalism comes this advice, originally from Penelope Trunk, the Brazen Careerist:

"There will be times when you feel invincible. There will be times when you feel doomed. You're wrong in both cases."

Entrepreneurship is a rollercoaster ride. If you treat each step forward as a triumph, and each step backwards as a tragedy, you'll find yourself emotionally exhausted and, likely, making bad decisions. Keep your eye on the big picture, and don't let the highs and lows get away from you.