In The Key to Happiness, Meik explores the hidden treasures which can improve your happiness, and divides them into the six building blocks of happiness; togetherness, money, health, kindness, trust and freedom. For each happiness block he offers practical tips: for togetherness he encourages setting up a mini-library in your apartment building or starting a tool-sharing programme in your street; for kindness he suggests leaving a surprise gift on a stranger's doorstep, helping a tourist find their way or telling someone who means a lot to you that they do