J-Fev, I wish you all the best during your difficult journey. Both my wife, a psychologist, and I, a research scientist in the pharmaceutical industry, now retired, have battled with cancer. It is an overwhelming, traumatic diagnosis, and treatments can be very taxing physically and emotionally draining. But, there are many new and effective treatment options available in the oncology realm. More are coming. I suggest that, if you haven’t done so already, seek out support groups of people who have travelled your path or similar paths. I found it to be very helpful.
None of us ever know how much sand is left in the hourglass. It is a cliche, but true, today is here, tomorrow is never promised. As Chris Fitzgerald said, it is good to live as if today may be your last chance to do what you want.
When my wife had a recurrence of her cancer eight years ago (now stage 4, but thankfully her treatment regimen is working and she is currently no evidence of disease) I sought out mental health support. My therapist made the point that neither my wife nor I have the luxury of the illusion for procrastination. He was correct. I took too much for granted. It has helped me to try and focus on the time that we have together and to make the most of it. I’m not always successful, but I try.
As to your question about pondering your last gig, or last of anything, I do. I give more thought to the fact that someday, I either will not want to or can’t take gigs anymore. It doesn’t really bother me. I know that even if I don’t play out anymore, there is still music inside of me that needs to come out. There is still the Bach Cello Suite Six. When asked why he still practices everyday while in his 80s, Pablo Casals quipped that he thinks he is still seeing some improvement. I’ve reached the septuagenarian stage, so even without going through cancer, I’ve reached a point in my life that, as someone else said, there is actuarially more in the rear view mirror than ahead.
Thankfully, I am currently in reasonably good health. I take the gig opportunities that I want and play them as well as I can. I still get much enjoyment out of doing my best. I play in a lot of musical theater pit orchestras. The hours are better than bar gigs, although I still play them as well. It seems as if I’m getting fewer calls for the wedding/banquet/corporate events these days. Many of those situations are very image conscious, and there are a lot of talented younger players on the scene who are getting the calls now.
All that said, there are still opportunities that I take, and I will take them until I can’t or don’t want. I hope that you can do the same.
Good luck on your path ahead. That you are contemplating what it takes to journey it with courage and grace already speaks to the fact that you have both.
Dennis
I was put in a cast that had my pinky facing out like reaching for the 5th fret pressing into the hand bone so it could hopefully fuse without the knuckle, wrist was bent downward and it all rested on a board the cast was the heavy plaster type crazy thing was a reset the hand bone myself I was freaking out that I had a v shape in my palm and just grabbed it and moved it back in place 
