Much has already been said. Find a good Rheumatologist, research low inflammation diets and makes some healthy changes, do your best to remain optimistic. Don't be your disease. Don't be a reaction to your disease. Be someone who has the disease and does their best to live life fully, but who also happens to have RP.
My grandfather had coronary artery disease. Over a period of around 20 years he had multiple procedures, and ultimately open heart surgery. He was reasonable certain that his heart disease would be what took his life. He died after a relatively short fight against cancer of the lymph nodes (just 3 months from diagnosis to death). He said he never would have thought that it would be cancer that would kill him.
A couple of months after I was diagnosed, when flare after flare were still popping up in my ears, his words came back to me. Disease of any kind sucks. I mean, we have the contrary to ease, after all. But, we can't know our final day until it is upon us, and even then sometimes we don't see it coming. Do not let RP drag you down. Easier said than done, especially if your flares aren't easily managed, or if if you aren't tolerating a medication and have to stop it. If you have things that bring you joy in life, keep doing them. Do them more! If you can't because RP has physically gotten in the way, seek out other things that bring you joy!
And most importantly, don't give up! Strides are being made in medicine as we speak! You never know what tomorrow will reveal!