I recommend the book "Your Brain at Work" by David Rock. He does a great job at explaining what goes on in your head on a given day, for a given decision.

https://www.amazon.com/Your-Brain-Work-Strategies-Distractio...

There is a good book - "Your Brain at Work" by David Rock - explaining this (and many other things)

http://www.amazon.com/Your-Brain-Work-Strategies-Distraction...