In The Power of Self-Discipline: How to Use Self Control and Mental Toughness to Achieve Your Goals, author Daniel Walter highlight strategies for becoming more self-discipline, mentally tough and self-motivated.

“Self-discipline is like a key—it unlocks the door to personal fulfillment and opens the door to the life you have been dreaming of. With self-discipline, the average person can rise further than intelligence and talent alone will take them, and the ordinary person can become extraordinary. On the other hand, an educated, talented person without self-discipline will rarely rise above mediocrity.”