August 8, 2013
Creating a mix of investments that is less likely to prompt you to sell a strategic holding after it has dropped sharply can be just as crucial to achieving retirement success as maintaining low expenses. In fact, research indicates that “behavioral finance” issues actually lower investor returns more than the use of high-expense investments. Continue reading here Expenses and Behavior are Key to Investment Success
TWM Blog 
Right on!
it is very good reading ans always reminds me of discipline and diversity