Go to the
www.NMSS.org site. From there you can sign up with your local MS society. ((hugs)) The support one receives through this organization is like no other, once you find the group that suits you best.
We all make the choices we think are best for us at the time. You can always correct your thinking and choices, through education especially.
What you will find is that there are many ways to help you feel better, and keep going and doing those things you enjoy. You might not be able to do them at the pace you have been, but you will learn trade offs that give you enjoyment.
I don't have MS, but only one lesion due to the accident I have a verterbrae chewing into my spinal cord. The MS society took me under their wing anyway, as I have all the same symptoms of MS. The trip I took last week was with a loaner motorchair from the local society.
You will gain the support you need to say NO to anyone who doesn't understand your limitations. First though, you need to find what those limitations are for yourself. AND remember, you are allowed to change them at any time, so if you try something this week and decide next week you can't, you don't let a family member chide you into it because they think you are faking.

There is life with MS! New drugs and solutions are being found all the time! Hang in there with us!