There is so much but here are a few for me :
First thing is drive and determination in life. I now hold the belief that anything is within our own power you just have to have the drive and determination to attack and conquer. I'm not a quitter and battling this disease has driven the point home that no matter how large or over coming a problem is you just need to do whatever it takes to overcome it and never give up.
Secondly it has shown how the little things in life matter. I stop to listen to the breeze in the trees nowadays, I stop to watch bugs and apreciate how hard they work in their little world of theirs.
Third and most important it has taught me to love every minute of life - it can be taken away so easily from us.