It’s quite common to hear celebrities and politicians boasting about how little they sleep. They like to create the impression that their success and achievement come from their giving up sleep to work exceptionally long hours. But the truth is that success and sleep go hand in hand. A group of Spanish psychologists have interviewed a wide range of successful people over the last 30 years and have found that most of them credit their achievements to plenty of rest and sleep. Far from being an obstacle to a great life, sleep in fact seems to underpin it!