I train or have trained a lot of people post-injury rehab. Folks with fused vertebrae, folks with inner ear balance issues, folks with knee issues. Folks with one useable arm and folks with asthma. People who can't just go out and put weight on the bar and push. But they find a way to train and get better with what they have.
This guy, Scott Belkner, is just like that, only more so.
He trains as hard as he can around the limits that he has. That's all any of us can do. Don't get disheartened by what you can't do. All the more so if your limitation is more temporary and more solvable than his CP.
Find what you can do, and go after it with intensity and enthusiasm, and you'll get places too.
Don't be your limitations. Be your strengths.