What do people who relish the second half of their lives do differently than those who dread getting older? Sociologists therapists and psychiatrists have spent entire careers investigating the ins and outs of successful aging, yet their findings are inaccessible to ordinary people, hidden in obscure journals to be shared with other experts. Now the international bestselling author of The 100 Simple Secrets series has collected the most current and significant data from more than a thousand of the best scientific studies on the second half of life. These findings have been boiled down to one hundred essential ways to find and maintain joy, health and satisfaction every day of your life. Each one is accompanied by a true story showing the results in action.