Adopting a more upbeat mind-set helps facilitategratitude, too. Instead of bonding with friends over gripes and annoyances, try sharing what you're grateful for. To avoid sounding boastful, focus on giving credit to other people, as in, 'My mom took a whole day off from work to get to my game.'

Studies show that using negative, derogatory words -- even as you talk to yourself -- can darken your mood as well. Fill your head with positive thoughts, express thanks and encouragement aloud and look for something to be grateful for, not criticize, in those around you, especially loved ones. New York psychiatrist Drew Ramsey says that's an essential tool for surviving the holidays. 'Giving thanks for them helps you deal with the craziness that is part of every family,' he says.

Last, if you find you take too much for granted, try the 'It's a Wonderful Life' approach: image what life would be like without a major blessing, like a spouse, a child or a job.