http://narrative.ly/pieces-of-mind/nick-brown-smelled-bull/A plucky amateur dared to question a celebrated psychological finding. He wound up blowing the whole theory wide open.
A long article but helluva good read.
To sum up:
IT guy looking for a new career takes a psych course and smells bull. Tracks smell back to origin where a psych researcher used a formula's variable names (and their mathematical relation) from
fluid mechanics to state that you need at least 2.9013 positive emotions for every negative emotion to flourish as an individual or as a team. I am not making this up.
IT guy then brings in a doctorate in psych and a physicist known for debunking bunk to write an article pretty much destroying the entire branch of psychology known as "positive psychology."
Along the way, learn that psychologists are not good at math. Or science.