In From Strength to Strength, Finding Success, Happiness, and Deep Purpose in The Second Half of Life, Arthur C. Brooks discusses the Indian concept known as vanaprastha. It comes from the varnasrama system of Hinduism which splits up our lives into four distinct stages, each happening every 20-25 years—with vanaprastha being the all-important third stage. It works like this: After our youthful first stage, in our early-20s we move to a second stage that lasts until we are about 50 years... Read more