■ You can take part in the global #SharetheJoy campaign to mark the launch of The Book of Joy (PenguinRandomHouse), written by Archbishop Emeritus Desmond Tutu and His Holiness Dalai Lama. Their publisher says the two men want to show how “joy and compassion always win”, even in the face of adversity. To join the #Sharethejoy movement record a simple iPhone video, finish this sentence, “For me, Joy is…”, saying why you think the publication of the Book of Joy is important, ask your friends to share their answers online with #Sharethejoy, and challenge a specific friend to do so as well. Richard Branson, Alanis Morissette, Ariana Huffington, Brene Brown and Susan Cain are among the celebrities sharing their joy. Click on a personal message to hear the Arch’s message.