Can a person who has been afraid and timid most of their life find the courage to face their fears? When the reward is more significant than your fears, you will move mountains and part seas despite your fears.
The courage to change is the most challenging battle most people will ever face in their life because it involves them changing themselves. 
I learned many lessons in life the hard way, but I eventually learned & came to understand that every new step or level in my life would require a new version of myself.
They say you can't teach an "old dog" new tricks. But, life will teach us all lessons even when we are not prepared to learn.
This book will teach you that what you know is not more important than what you demonstrate.