Book recommendations:

1. "The Power of Positive Thinking"
https://www.amazon.com/Power-Positive-Thinking-Norman-Vincent/dp/0743234804

2. "The Magic of Believing"
https://www.amazon.com/Magic-Believing-Classic-Guide-Unlocking/dp/0486832546/ref=sr_1_1?crid=WYG7DU845G1W&keywords=the+magic+of+believing+by+claude+bristol&qid=1570598496&s=books&sprefix=the+magic+of+be%2Cstripbooks%2C182&sr=1-1