Habits are notoriously hard to change—exercising more often, practising calmness, getting healthy—it all takes time and effort. So perhaps you’ll be pleased to know that there’s a way to get habits into your routine. We talk with Bernard Balleine, Director of the Decision Neuroscience Lab at UNSW; and with B J Fogg, founder of the Behaviour Design Lab at Stanford University about his new book Tiny Habits.