The positive outlook that optimists project does not come from ignoring or denying problems. Optimists simply assume that problems are temporary and can be solved, so optimists naturally want more information about problems because then they can get to work and do something. Pessimists are more likely to believe that there is nothing they can do anyway, so what's the point of even thinking about it?
Confidence: How Winning and Losing Streaks Begin and End (ed. Crown Business, 2004) - ISBN: 9781400080953