Being hopeful and confident about the future or the successful outcome of something is actually unnatural to us human beings. Some research shows that people who are pessimistic are in fact more realistic. Evolutionarily, we were programmed to be pessimistic, to imagine the worst-case scenario, which then kicked our flight/fight system into gear and enabled us to get away from many predators, such as the lions, tigers, and bears that could and would have eaten…