I'm 13 years out from my first diagnosis and three from my second. I have my moments.
In 2016 I had a perfect storm of events that, even without my cancer coming back, would have tested most people. There's no escaping these circumstances once they descend on you, and the immediate problem take up all much energy you don't see the big picture clearly until later. Like putting together a diabolical jigsaw puzzle when you don't know what it looks like and have no idea how many pieces there are.
I believe many of us end up with genuine PTSD. Thing is it's rare for that to be clinically recognised and, to be honest, I don't know what difference it would make. We've just got to try to find a way through. Which is fucking exhausting.
Hang in there, talk to the pros. There are so many reasons we don't want this disease, and fear of death and treatment is only part of the problem. Mxx