Every Wednesday is Tip Day. This Wednesday: six tips for battling loneliness. The more I've learned about happiness, the more I've come to believe that loneliness is a terrible, common, and important obstacle to consider. A while back, after reading John Cacioppo's fascinating book Loneliness, I posted Some counter-intuitive facts about loneliness, and several people responded by asking, "Okay, but what do I do about it?