Counterintuitively, to understand who we are and what's most important to us, we can actually explore the things that cause us suffering: our regrets.

Regret is a powerful force. And a motivator of behaviour.

Revealed by Daniel Pink in his stunning book 'The Power of Regret',

"If we know what people regret the most, we can reverse that logic to reveal what they value the most."

What lessons has regret taught you throughout life?

These are the five key lessons I've learned from regret.