Unless you face your devil inside, the dividing line between success and misery is thin. It is all too easy to sabotage yourself and others, with huge consequences for you, your family, your friends and the people you lead. To avoid this hazard, practising introspection is the most important skill we can use in our lives.

The Devil Inside is about breaking through your own blockades. This book enables you to observe how you have developed particular habits, helps you to analyse why you behave...