It's easy - too easy - to get caught up buying gifts during the holidays and end up overspending and piling up big debts, which can lead to depression and self-recrimination when the bills come due. Psychiatrist Mark Goulston discusses how trying to buy happiness can leave us more miserable. Dr. Goulston says some of the simplest ways to enjoy the holidays are also the cheapest. He is the author of "Just Listen: Discover the Secret to Getting Through to Absolutely Anyone." Read his entire blog at markgoulston.com.