An excerpt from The Book Of Bobby Maximus (Verse 1, Chapter 12): 

I will defeat the person I was yesterday. 

The person I compete with the most is the old me. 

Today I will train harder than that person, eat better and pay more attention to recovery than that person. 

I will better myself physically in every way I know how. I will also be kinder to people and show people in my life more love. I will become a better person than the person I was yesterday. 

I will read and educate myself and become smarter than I was yesterday.

 I am always capable of defeating the man I was yesterday. 

I know his strengths and I know his weaknesses. I know him all too well. 

He is the old me and there is nothing he can do to stop me from getting better.