People who have chronic diseases, how do you deal?


How do those of you who have chronic diseases deal with the side effects of medications?
I was diagnosed with Multiple Sclerosis back in June of 2007 at the ripe old age of 21. I have been on corticosteroids ever since, along with Lithium. I have gained a tonne of weight since then and no matter how much I exercise or how little I eat I can not lose weight.
The corticosteroids give me a "buffalo hump" and a beer gut. I am tired all the time, confused, depressed. My neurologist says that most of those are symptoms of the MS and side effects of the medications I am taking.
I don’t think I can continue living like this. My quality of life is SO LOW, and it wasn’t even that bad before I started taking medications.

How do you deal?