I do agree with other posters that many people with serious health issues continue to work because it gives them a focus other than their own physical problems. That said, I totally get where you're coming from and I have experienced the same thing in therapy. When my first therapist retired, she referred me to her partner. I gave it the old college try but in the end I left. One of the reasons was that shortly after starting with him, his daughter died due to a drug overdose. It was a small town and the news spread like wildfire. It was his only child and I couldn't even imagine how he and his wife could deal with this terrible pain. Going to therapy and talking about my issues was difficult. Every time I looked at him, I felt bad about burdening him with my junk. We talked about it, and he told me honestly that he found work helpful and healing. But it kept getting in they way for me. I finally quit and began looking for a new therapist. I figured that it was good that he found work helpful in dealing with his grief, but I was in a place where thinking about HIS grief and pain was seriously preventing me from dealing with my own issues, purely selfish on my part, but I felt at that point in my life I needed to be centered on what I was trying to accomplish.

I hope you talk with your therapist and if you're able to work through it with her great. If you can't and you need to find a new therapist, I think that's okay too.