He wrote a book called "The Four Things That Matter Most" about the four things you want to say to the most important people in your life before they or you die: thank you, I love you, forgive me, I forgive you.
In zijn boek 'The Four Things That Matter Most' staan de vier dingen die je wilt zeggen tegen de belangrijkste mensen in je leven voordat ze doodgaan, of jij: dank je, ik hou van je, vergeef me, ik vergeef je.