Have patience. Stocks don't go up immediately.

Don't be afraid to be a loner but be sure that you are correct in your judgement.

Managements, you know, often think of themselves.

Have a philosophy of investment and try to follow it.

You never really know a stock until you own it.

Try not to let your emotions affect your judgement.

I agree with Warren to keep it simple and not use higher mathematics in your analysis.