Perseverance comes to mind, steady persistence. Much exertion, much diligence. Perseverance requires discipline. Discipline requires endurance. Long suffering beyond our tolerance.
Tolerance requires patience.
There will be pain, setbacks, lots more work yet. Keep pumping iron, only one more set. Our walk with the Lord can be extremely challenging and difficult. In the midst of the storms one can lose perspective and lose sight of the goal. The goal to be more like Jesus- to grow into His image.