Good jobs for ME/CFS patients - anything which is sedentary, where you can work at your own pace. For me, being on the computer is best. I have a design background and still do websites occasionally. Some kind of eBay seller might also work, whether you're reselling something such as clothing or books, or making a craft item and selling that.
If you can't work full time consistently, 8 hours a day, 5 days a week, 52 weeks a year, then you're likely eligible for some kind of disability. Don't shift to working part time to make things easier, because if you have to go on disability, it will be based on your part time income, instead of a full time income. As SS disability is only 30% of your income, you will be making only half of that and be extremely destitute.
So if you can't work full time, apply now. You may be able to work part time while waiting for disability if you stay below the Substantial Gainful Activity limit. Now that Obamacare has kicked in, you may be able to get some kind of affordable health insurance independent of where you work.