I'm scared

I'm scared for what the future might hold, and honestly, it's exhausting.
First of all it's my essential tremor. I have no idea what sort of progress it might make, or if it's coupled with a muscle eating disease, because I seem to lose what little strength I have. Sometimes my thighs are shaking, a lot of the time my stomach and back muscles hurt from walking or standing, my arms give in and act like overcooked noodles for hours if I exercise any stress on them what-so-ever... And all this worrying is probably making the tremors worse, although to be honest I don't have much reason to complain, the primidone is working nicely. My body just don't feel right.
I'm also going through a generally tough period and I have a dark outlook on most things. I wish it would change, that I could stop worrying about things that are of no immediate importance, but that's not how my mind works.
My hands have also began hurting again. It's uncomfortable, bordering on hurting just to type. Again, not a big thing to complain about, but I really wish things would run smoothly. At least I don't have a runny nose or a headache, that's good.