Dan Sullivan, a renowned expert in human potential, points out that it is virtually impossible to experience negative emotions when we are feeling grateful.

Because we tend to feel up or down according to what we're focusing on, a few minutes each day sitting in quiet gratitude can work wonders on our happiness level.  Constantly expressing and feeling gratitude is one of the surest ways to a lastingly happy life. 

What could you be grateful for?  What if you started keeping a gratitude journal?