Mark, sorry to hear about your health issues. Really tough break the universe gave you. My only suggestion, besides acceptance and reasonable openness to what your doctors suggest, is to focus on what you can do that is meaningful, beginning with cultivating your personal relationships with family and friends. This video may be helpful, by one of my Stoic friends who also got a rough deal from the universe: https://www.poliohealth.org.au/larry-becker/