In a recent blog post, the Virgin Group founder shared his favorite quote, from famed singer-songwriter John Lennon:
"[Lennon] said: 'When I was 5 years old, my mother always told me that happiness was the key to life. When I went to school, they asked me what I wanted to be when I grew up. I wrote down 'happy.' They told me I didn't understand the assignment, and I told them they didn't understand life.'"
Branson, like Lennon, measures success by his happiness — not by the amount in his bank account. "It's a common misconception that money is every entrepreneur's metric for success," he wrote. "It's not, and nor should it be."