Jane McGonigal

'SuperBetter' is fundamentally about a mind shift. It's about claiming your power to be in charge of how you spend your time and energy, and focusing it on the things that matter the most to you. Focusing on things that will bring real happiness, real well-being.

It has taken me a long time to work out the function of ex-boyfriends, at least for me: how they can help you work out what you want from life and from a partner by showing you what you don't. If a man is your ex, it's better all round if he was not Mr. Right.