It is a common sight when people tends to compare.
If I were to choose, I would choose to compare myself to I.
That suffice. It not only push me further, it can bring me to somewhere where I would think it is impossible from the point where I am now.
Definitely I am the strongest opponent of all but I know if I could defeat me. The easy one can just stand aside and allow me to triumph in ease.
Let's battle ourselves. The person in the mirror. That is the devil.