I have found taking the focus off myself and being able to help others very beneficial.
You also have to be flexible with your plans! I try and tell my oncologist when I want to have the chemotherapy treatments! I try and fit everything around school, but that has proved a little difficult with the last set of treatments, simply because I had to keep going past 6 cycles for the first time.
I don’t teach full time. The school that I teach at is also very understanding, and will give me time off if needed. My students know a little of what I go through - they don’t have the life experience to understand fully. In fact no one really understands what I go through. One of the things I have realised about suffering is that it can be extremely lonely, because of that. That’s the reason why a forum like this is so helpful.