http://www.bnet.com/blog/entry-level/12-ways-to-turn-around-a-terrible-day/3487?promo=713&tag=nl.e713

• Resist the urge to “treat” yourself. Often, the things we choose as “treats” aren’t good for us. The pleasure lasts a minute, but then feelings of guilt, loss of control, and other negative consequences just deepen the lousiness of the day.
• Do something nice for someone else. “Do good, feel good” – this really works. Be selfless, if only for selfish reasons.
• Distract yourself. When my older daughter was born, she had to be in Neonatal Intensive Care for a week. I spent every hour at the hospital, until my husband dragged me away to go to an afternoon movie. I didn’t want to go, but afterward, I realized that I was much better able to cope with the situation after having had a bit of relief.
• Seek inner peace through outer order. Soothe yourself by tackling a messy closet, an untidy desk, or crowded countertops. The sense of tangible progress, control, and orderliness can be a comfort.
• Tell yourself, “Well, at least I…” Get some things accomplished. Yes, you had a horrible day, but at least you went to the gym, or played with your kids, or walked the dog, or recycled.
• Exercise is an extremely effective mood booster – but be careful of exercise that allows you to ruminate. For example, if I go for a walk when I’m upset about something, I often end up feeling worse, because the walk provides me with uninterrupted time in which to dwell obsessively on my troubles.
• Stay in contact. When you’re having a lousy day, it’s tempting to retreat into isolation. Studies show, though, that contact with other people boosts mood.
• Things really will look brighter in the morning. Go to bed early and start the next day anew. Also, sleep deprivation puts a drag on mood in the best of circumstances, so a little extra sleep will do you good.
• Remind yourself of your other identities. If you feel like a loser at work, send out a blast email to engage with college friends. If you think members of the PTA are mad at you, don’t miss the spinning class where everyone knows and likes you.
• Keep perspective. Ask yourself: “Will this matter in a month? In a year?”
• Write it down. When something horrible is consuming my mind, I find that if I write up a paragraph or two about the situation, I get immense relief.
• Be grateful. Remind yourself that a lousy day isn’t a catastrophic day. Be grateful that you’re still on the “lousy” spectrum. Probably, things could be worse.