David Walker wrote 600 Steps as he was battling Multiple Myeloma in February, 2012. He made a remarkable "recovery" after almost dying from that disease in 2012 and lived life on his own terms and mostly independently for a little over 7 years. This is his story, his journey, and he hopes that in sharing it with others, it may be a source of comfort to anyone who has cancer or any friends or family members who are supporting a loved one who has cancer.