"You can do anything. Desire alone is proof enough that you can acheive it." Any one heard of that quote?

Question

I'm not sure if this is the exact quote or who it is by, but if anyone can figure it out, it would be greatly appreciated!

Answer 1

I found one very similar.

"You can have anything you want -- if you want it badly enough. You can be anything you want to be, have anything you desire, accomplish anything you set out to accomplish -- if you will hold to that desire with singleness of purpose."

Robert Collier