I've never had major knee surgery on any other part of my body.
Learn to enjoy every minute of your life. Be happy now.Don't wait for something outside of yourself to make you happy in the future.Think how really precious is the time you have to spend,whether it's at work or with your family.Every minute should be enjoyed and savored.
My grandfather's a little forgetful, but he likes to give me advice. One day, he took me aside and left me there.