Louis Braille is a good example of nothing being impossible and no limit not reachable despite your limitations. Louis Braille, who was also Blinded at an early age, was the man who invented the Braille language for the Blind. Of course, the language is called "Braille" today and benefits thousands of people in the ability to both read and write.
Image from Wikimedia public domain.
I think he did a great thing for those who are seeing impaired. The fact that you go places nowadays and see the braille writing helps show what a great thing he accomplished. Sometimes I wish I was that talented but I guess my area of focus is on other things that can help people in other ways.