Don't quit...live your life to the fullest...every single day...no regrets...your family deserves that from you, you deserve that...
I have survived several combat zones, challenging experiences that it was hopeless to think about a future (I know, it's different...however)...I learned that you have one life, cherish it and never let anything stop you, ever!
My thoughts and prayers are with you and your family...
Stay strong, pick up that darn camera and make magically images so your family will have something to cherish besides the physical time with you!