Virgin Group founder Richard Branson likes to think long-term. Specifically, he likes to ask himself one particular question: In five years, will this matter?
"Far too many people spend too much time looking in the rear-view mirror, worrying about where they went wrong, and get distracted from the road ahead," he writes on his blog. "Hindsight is a wonderful thing, but if you spend too much time wallowing on what's behind you, you'll never end up where you want to be."
Ultimately, if you dwell on the past, "you'll never move forward," the billionaire entrepreneur says.