Hi Andy, what a fab improvement from the treatment, I am in a similar situation 6 years on ( although not as bad as your start point).
dont feel guilty ever because your cancer is not as bad as someone else’s? You didn’t make it happen or not for you or others. On your basis of guilt someone who is cancer free should be flailing themselves every night for being healthy!
Please rejoice for the day you have and the good that you can do. Feel only guilty for wasting a day or ignoring an opportunity to help others.
When I was first diagnosed I started telling my story , about a year after a friend called me sheepishly because they heard me speak, went to the docs, caught prostate cancer early and now are clear. They didn’t want to tell me because mine is incureable and they felt guilty. I said how do you think I feel that my big mouth may have saved your life? They got it, no more guilt just the joy of being alive .
for you my friend, feel grateful, love life, make a difference, do the right thing but never feel bad about something outside your control just give support if wanted.
Take care, be happy.