I've noticed, when I am lowest, that to smile at someone who is lower, makes me feel better, as well as the other person.
Smiles indeed do multiply, fester, and incite riot, in the crestfallen.
Much better than a pep-talk, because it's your own idea, it's the only thing I've found, that works from the inside out, and is 100% effective.

69yo male, Steam Engineer, Me=4,SCC=0, loving wife, living life as it comes (no other option)
We are all born from Mother, but live and die alone.
Make the best of it, Mommie did all she could, daddy was just a guidance councelor, the rest is ALL up to you.
...and now, 3rd occurance: Surgery 5/1/12