I Always have trouble getting started when I write!

I certainly have enough on my mind to write stuff for the rest of my life, however long that might be, but I sure wish I could put it all into order quickly and concisely! I woke up today with "when I call upon Jesus, all things are possible" going through my head. I'm not even sure what the name of the song is and I had probably heard it on the radio while I was mostly asleep, but it was a great message to wake up to! I had had a really dreadful dream about a dying kitten that I don't think should be put into words, because it was just too repulsive and better not remembered. It's still clear in my head and I wish it wasn't.
Maybe I have trouble getting started writing because I'm always trying to pre-edit everything first... now there's a thought! I'm going to have to try just letting it flow and forget about the editing till it's necessary. I am, after all, writing for my own sake, though I may or may not share it.
I've had a fairly level day so far in the area of pain. I couldn't remember if I'd taken my pain pills at some point while half awake, as I try to do, so I had to wait long enough after I got up to be sure not to overlap, but it was ok today. Things can change in a blink with this pain, but I try to appreciate every moment when it's letting me relax a bit.
I think I'm beginning this in fits and starts and maybe that's just how it'll be. That's part of what this disease, "RSD" (Reflex Sympathetic Dystrophy,) does to me. I can be on a roll with a thought, or a conversation, or with writing, like now, and my mind will draw a blank. It might clear up quickly so I can go on, or it might end up on another track altogether. I tend to think that last is how it usually works. I lose my train of thought and in grasping for it, I come up with another one and go with it. That can be frustrating, but at least if I'm talking to someone else, they can often pull my brain back to where I lost it... lol! It does make writing difficult though and I have So Many things I want to write about!
At the moment I'm rambling and it's almost supper time, so I'd better get back to this later.