How Can I Afford Insurance and Still Work?

I have a neurological disorder that is slowly taking my ability to use my legs away. I am trying to keep my self insured and afford the prescriptions/ physical therapy/ doctor appointments and procedures. I work for a school and I am not offered health insurance. I currently am now making too much money to be able to afford my insurance. If I stop seeing the doctor and going to physical therapy my muscles will tighten faster and I will lose the use of my legs sooner. How can I afford insurance and still work and earn a living?