Paul Tudor Jones after losing 70% of his account on one trade.

“That cotton trade was almost the deal breaker for me. It was at that point that I said, ‘Mr. Stupid, why risk everything on one trade? Why not make your life a pursuit of happiness rather than pain?'”

- Paul Tudor Jones

Some more wisdom

“If I have positions going against me, I get right out; if they are going for me, I keep them… Risk control is the most important thing in trading. If you have a losing position that is making you uncomfortable, the solution is very simple: Get out, because you can always get back in.”

“Don’t focus on making money; focus on protecting what you have.”