This video is a good example of how people can get things done when it has meaning to them and they believe it can be done. The text in the video pointed out that his surgeons felt his abilities would be limited post surgery. When you have a deeply seated reason for doing something, you can go pretty far despite the naysayers.
When something has meaning, I raise the "bar" on getting things done. My expectations, my bar is raised so high, God gave it a spit shine. In the same vein, something is always being adjusted. That bar may move, or you may move. Smart instructors in college introduced me to the 80/20 rule. So, I understand I'm not always working with that 20%. In order to get my goal, I may have to come in subpar on a few tasks. It is a move I will make to get that goal though.
We make compromises every day in personal relationships. It is not different when we switch to terms of health and fitness. Make resolutions or goals that are meaningful to you and have enough belief in yourself to face the opportunities for failure that will be constantly presented to you.