"One has to devote oneself to a particular pursuit. To be successful at anything, you have to make a total commitment to it."

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I learned in my Ph.D. the discipline I needed to be successful. Most boxers are not that disciplined. They have talent, but the self-organization - the ability to schedule yourself and your priorities - is lacking. My studies were about the control of training on both the psychological and the physical side.

— Wladimir Klitschko