I recently had the pleasure of travelling to Cape Town to present a keynote address at the Dare to Lead conference organised by Green Building Council South Africa (GBCSA). I had just 20 minutes to speak on a psychologist’s view of health, wellbeing and performance; that’s a huge subject area and pretty much my whole career condensed down to the typical time it takes to boil a pan of potatoes. So, I focussed on just three psychological theories: motivation, personality and evolutionary psychology.