Thinking makes it so

Does anybody have any information on the saying:

Nothing is hard or easy but thinking makes it so.

Thanks

Michael

The quote I think you mean is:

"Why, then, 'tis none to you; for there is nothing
either good or bad, but thinking makes it so: to me it is a prison."

Act 2, Scene 2 of Shakespeare's Hamlet

Mind over matter. If you don't mind, it don't matter. (Ha. Ha.)