When "positive thinking" doesn't help..........

Tiny Buddha has a suggestion:

Feel your feelings; just don’t attach meaning to them. 

Feelings are just like the weather; they can’t be controlled and they are always changing. I found that if I just let myself be in the sadness, it passed so much quicker.

Reminds me of a lesson learned in my 12-Step days:  We are not our feelings.  But, if we refuse to honor them by refusing to feel them, they will have their say.  They will absolutely mess with your head.