Abide in Me, and I in you. As the branch cannot bear fruit of itself, unless it abides in the vine, so neither can you, unless you abide in Me." John 15:4
Everyone has seen a Nike commercial. The implication is, that all that's needed to become an athlete is determination, hard work, and those shoes. When it comes to human nature, life is very different. Human beings just aren't disciplined enough to do all we need to do. We can't change ourselves by our own initiative.
Paul, recognized that changing human nature calls on something else--a supernatural change agent. Our only responsibility is to be willing to allow that change agent to bring about the needed improvements.
No, He might not improve your golf game, even though you wish He would. He will adjust your attitude, your character, and your relationships for the better. So just do it. Allow Christ to change you from an ineffective, frustrated self-improver, to a winner in the game of life.