Most of the time you feel enthusiastic as evidenced by your positive outlook on life and your high levels of energy. When you feel energetic, you are consumed by flurries of activity. You probably keep to a busy schedule and rarely take time out to relax or veg out in front of the television.

When you experience the ups and downs of mood swings, the most important thing to remember is that you're not alone. Everyone—even the calmest individual—is liable to fly off the handle now and again.

Ever shouted at a loved one for no apparent reason? Had a bad day at work, just because? Or found yourself ricocheting between happiness and sadness? Getting your mood swings under control is no easy feat, but once you know what to look for, they can be surprisingly predictable and manageable. .........