By Kelly Goldsmith and Marshall Goldsmith I’ve spent a lot of time studying what makes people happy, successful leaders. But some of the best suggestions I can think of came out of a study of a bunch of elderly retirees, who, as far as I know, never had been CEOs. A friend of mine had interviewed this group about what advice they’d give to younger people. What, they were asked, is the key to having a great life? Their answers were both simple and wise so I’ll summarize here. Then I will explain what applicability I think they have to your careers. 1. Be happy now. Not next week, not next month, not next year. Now. The great Western disease we are spreading around the world is “I’ll be happy when.” When I get that BMW, when I get that new house, when I get that status. Americans are among the luckiest people in the history of the world. Don’t get so wrapped up looking at what you don’t have that you miss that, what you do have. 2. Appreciate your friends and family....