They lied. 
But seriously:
When I am troubled and the weather permits, I take the bike out for a ride. I'm always more mellow and relaxed afterward.
If it's raining or snowing and motorcycle is not an option, I go read a book with the music on or take a walk. If I can afford it that week, I'll go traveling (which usually means reading a book with the music on or taking a walk, but in a different town).
If that didn't work, going and doing something silly like Chuck E Cheese or roller/ice skating or to the arcade can be fun and cheering.
If all else fails, there are always the emergency measures of sex and/or the liquor cabinet.
When none of the above work it's off to the doctor to get my thyroid levels checked, because if those won't fix it, the problem usually isn't mental.
Mostly it's just a matter of maintaining a mental balance and not letting myself get down & discouraged in the first place. The first post in the thread had the best suggestion of all.
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