I rarely remember my dreams. Generally it's only if I wake up in the middle or right after one, or if something reminds me of one shortly after I wake up, that I'll recall a dream. Otherwise they're lost with the dew.
Saturday morning, around 4:30am, I woke myself up from a dream. In that dream, I somehow knew that the reality I was experiencing was an illusion, and was determined to push through it. (I'll punt for now the question of whether "ordinary" reality is an illusion, and make the provisional and practical assumption that the reality I usually experience more or less corresponds to an external physical universe.) I made some sort of physical/mental effort that's hard to describe (though it's worth noting that it was somehow centered in the belly, the hara, the dantien) and woke up. I only remember the tail end of the dream, and that vaguely, but I have the sense that there were nested realities within the dream before breaking out of that final (?) one.
I probably would have gone back to sleep and not remembered anything of it in the morning, but my phone buzzed with a text message that turned out to be an automatic alert from the server at my day job. (A low memory condition -- I need to reset the threshold for that alarm, it's triggering too often to be useful.) Since the phone was set to vibrate rather than ring I probably would have slept through it, but as I was awake already, I got up to check it. That put me next to the computer, in place to leave a note to myself about the dream.
Still half-asleep, here's what I wrote (with a few typos fixed):