I had an unusually dream intensive night. This happens to me occasionally, when I'm on progesterone and I'm fortunate enough to have a proper night's rest. The downside, of course, is that I typically only have nightmares.
This time I was lucky. While several threatened to become nightmares, none of them reached that point, save for one. The dream itself was verging on being frightening, a state that I can often recognize in the dream and force myself awake. I tried to force my eyes open, I chanted to myself, "Wake up. Wake up!" Usually this has results within minutes.