When I buy a stock, I have kind of an idea where I want to sell it.
Basically, we try to buy value expressed in the differential between its price and what we think its worth.
Making a decision to sell is the most difficult thing we do.
Before selling, try to re-evaluate the company again and see where the stock sells in realtion to its book value.
Warren is a very good judge of people and he's a very good judge of businesses.
I find it helpful to buy near the low of the last few years.