Authors:

What was most important was the knowledge [aspect] of the fight. I learned this early on and just told myself to "upgrade my mind." That's just what I wanted to do my whole life.

"Mike Tyson: 'You Have To Feel Comfortable Being Uncomfortable'". Interview with David J. Parnell, www.forbes.com. November 18, 2014.
What was most important was the knowledge [aspect] of the fight. I learned this early on and just told myself to upgrade my mind. That's just what I wanted to do my whole life.