We might love gruelling hikes, trips to see far-flung relatives or super hard crossword puzzles, but often we lack the motivation needed to embark on these fun things. How can that be? They make us happy, right?

Dr Laurie Santos explores why our brains don't encourage us to do things that we know we'll enjoy, and presents some strategies to help us do more of the activities that will result in happier and healthier lives.