Once I realized that, yes, I could actually get the ceiling all-the-way-clean, it was easier to climb back up the ladder.
And, btw, I am kinda scared of heights. That fear is what made me climb the ladder in the first place and start scrubbing the ceilings. I'm afraid of a lot of things these days, and I didn't used to feel that way. To walk out on a high rock ledge and look down, I've always loved it right up until the vertigo overpowers the awe and makes me step back. That ladder is the same thing. I climb up with important work to do, remind myself that I am following all the recommended safety precautions, and do the work. If I start to get dizzy, or start to feel scared, I just hold still and breathe for a second. It works pretty well. This little pocket of fear, I can conquer it. I can climb the ladder, and be a little scared, and still do the work.
Facing fears, conquering the seemingly unconquerable, this is what I have been doing lately. Life is overwhelming most of the time, I am really awfully frightened most of the time, but climbing ladders has helped me get through the week.