The overwhelming majority of people are comfortable with consensus, but successful investors tend to have a contrarian bent.

Short-term performance envy causes many of the shortcomings that lock most investors into a perpetual cycle of underachievement. Watch your competitors not out of jealousy but out of respect and focus your efforts not on replicating others' portfolios but on looking for opportunities where they are not. The only way for investors to significantly outperform is to periodically stand far apart from the crowd, something few are willing, or able, to do.

It is crucial to have a strategy in place before problems hit, precisely because no one can accurately predict the future direction of the stock market or economy. Value investing, the strategy of buying stocks at an appreciable discount from the value of the underlying businesses, is one strategy that provides a road map to successfully navigate not only through good times but also through turmoil.

Value investing is predicated on the efficient market hypothesis being wrong.

When a Wall Street analyst or broker expresses optimism, investors must take it with a grain of salt.

Almost no one will accept responsibility for his or her role in precipitating a crisis: not leveraged speculators, not willfully blind leaders of financial institutions, and certainly not regulators, government officials, ratings agencies or politicians.

The avoidance of loss is the surest way to ensure a profitable outcome.