All time is tough for me . . cause it’s the classics: Think and Grow Rich, Napoleon Hill
The Success System That Never Fails, W. Clement Stone
then there’s How to Kill a Unicorn, Mark Payne
Zero to One, Peter Thiel
That’s a partial list . . . . but a great start!
Sean
Do you want to learn how to start a coaching program that stabilizes your income and changes lives? If so, visit http://www.AnyoneCanCoach.com
Sean