(My personal thoughts only, based on observation and my own personal experience).
I think there are three groups,..
there are those who do not get better,..they die of Cancer or their injuries.
Then there is the group who return to health very quickly, and who go on about their lives as though nothing had happened.
Then there is the group who do get better, but who find every day difficult. They will complain that the journey to health is slow.
I think I am in the last group. I did get better, but I deal with a lot of stuff,..PTSD, grief.
I might say that I do not feel that I am getting better. People who find themselves in this group will often complain about the process.
I wanted to get better. I am glad I did. But I do deal with stuff as a consequence,..flashbacks, lack of support, reoccurrence of my symptoms.