5 books for self motivation 

The Power of Now" by Eckhart Tolle 

Atomic Habits: An Easy & Proven Way to Build Good Habits & Break Bad Ones" by James Clear

Awaken the Giant Within: How to Take Immediate Control of Your Mental, Emotional, Physical and Financial Destiny!" by Tony Robbins

The 7 Habits of Highly Effective People: Powerful Lessons in Personal Change" by Stephen R. Covey 

Drive: The Surprising Truth About What Motivates Us" by Daniel H. Pink