I guarantee you will have a great day if you do this. And you might get a huge laugh out of it as well.

Believe it or not this episode touches on and doubt, more experimental, psychology, and the holy Grail of positivity bias. All because your friend wants you to help him move a piano.

Experimental Psychology

This particular exercise involves elements of the placebo effect, and something called Cognitive Distortion (not cognitive dissonance).