"Giving yourself permission to lose guarantees a loss"

This quote means that when somebody allows themselves to accept failure or defeat prior to even trying their finest, they are most likely to fail. By giving themselves permission to lose, they're unconsciously informing themselves that it's acceptable to not attempt as hard and they're less most likely to put in their complete effort. As a result, this state of mind ensures a loss. One's mentality plays a big role in how they approach obstacles, and if they enter into it with defeat currently in mind, their potential for success considerably decreases. It's important to have a favorable and determined outlook in order to achieve one's goals.