Trade small because thats when you are as bad as you are ever going to be. Learn from your mistakes.

There is another point that I think is as important: You should expect the unexpected in this business; expect the extreme. Don’t think in terms of boundaries that limit what the market might do. If there is any lesson I have learned in the nearly twenty years that I’ve been in this business, it is that the unexpected and the impossible happen every now and then

You should always have a worst case point. The only choice should be to get out quicker.

You have to minimize your losses and try to preserve capital for those very few instances where you can make a lot in a very short period of time. What you can't afford to do is throw away your capital on suboptimal trades.

I always say that you could publish trading rules in the newspaper and no one would follow them. The key is consistency and discipline. Almost anybody can make up a list of rules that are 80 percent as good as what we taught people. What they couldn’t do is give them the confidence to stick to those rules even when things are going bad.

When things aren't going right, don't push, don't press.

Trading decisions should be made as unemotionally as possible.