Whitney Tilson, editor at Stansberry Research, says the current market conditions have made him "much more prone to let my winners run," and that investors should not take a market pushing to all-time highs as some sort of sell signal because in most times -- including today -- new highs are a positive, even if they inspire some nervousness and fear of new heights. Tilson says that investors should focus less on headlines and more on what drives markets, namely a strong economy and growing corporate profits. Ted Rossman discusses a new Bankrate.com study -- done in honor of Mental Health Awareness Month -- which found that nearly half of American adults say money at least occasionally has a negative impact on their mental health. In the Money Life Market Call, Jeff Muhlenkamp of the Muhlenkamp Fund discusses stocks.