04/22/2009 01:27 pm ET | Updated Nov 17, 2011

3 Ways To Shake Off A Bad Mood

Lately, getting stuck in a bad mood is pretty easy. Just tune into the dreary news, or pick up a magazine telling you how bad it's going to get. Your senses are assaulted with a relentless anxiety-laden negativity based on "objective" reporting of the sorry state of the economy, but also laced with toxic speculation - a crystal ball of negativity. Sometimes there is a biological component to your bad mood, hormonally driven, lack of sleep, or poor eating habits. Some moods emanate from home, an angry argument. And others seem to have no specific trigger, out of nowhere a darker veil descends. Research from the University of Pennsylvania by Professor Sigal Barsade may explain: Bad moods are contagious.

Let's lift the veil and demystify the process to liberate your mind.