Can't say about the physical pain due to the illness, but emotional pain is your responsibility.
Basic self help 101.
That advice doesn't work well when you are constantly deteriorating in the prime of your life. We are animals, sick animals die in nature, we are artificially kept alive today. I've lived a life of desperation, deterioration, loss and rejection because of physical disease(s). I can no longer do the hobbies I once loved, sports, am no longer adequate for physical intimacy, all my desires for life have dampened. At this point, i've been shaped by years of isolation. I am stoic or should I say apathetic to life in general, the entire world could end today and it wouldn't make a difference to me, nor increase my heartbeat. Despite having a six pack most of my life, doing every medication and dietary intervention you could think of, I still deteriorate. I have very little control over my life and little desire for anything that is still attainable.
Should I see value in my life or have desire to live despite my circumstances? Many would say yes, 10 different psychiatric medications, shrooms, lsd, weed, etc. and numerous counselors were never able to change my view of things, my depressed demeanor. Is it wrong for me to be depressed or see the rationality in suicide?
Whatever, no need to respond, it doesn't matter, it's just the same shit repeated ad nauseum.