D.R. Crotzer is an engineer, inventor, entrepreneur, and survivor whose life changed through diabetes, dialysis, open heart surgery, kidney transplant, and recovery. In Diabetes to Dialysis to Transplant, written with David Tabatsky, he shares the hard lessons, frightening hospital moments, practical health routines, and small victories that shaped his path back to strength. Dave does not speak as a medical professional, but as a patient who learned to ask questions, follow guidance, rebuild fitness, and become his own advocate. His story blends honesty, humor, caution, and hope for readers facing illness or supporting someone they love. Through every setback, he reminds people that awareness, discipline, family support, and steady courage can help turn a difficult health journey into renewed purpose, one step and one decision at a time.