A blind person may not have the gift of sight, but may develop every other sense available and be much more appreciative.
We all have certain things that we take for granted. Learn to appreciate the things you have, your talents, time, family, nature, pets, health, your senses.
Sometimes acknowledging what we lack allows us to see what we are capable of accomplishing, it allows us to see the contrast and help us make the decisions to chose to see the bigger picture in our lives.
You can show appreciation for all the good things in your life, you can do it with a simple thank you and even just acknowledging and expressing gratitude for it.