So last night, out of the blue, I managed a Lucid. So I was standing in a library place with my brother and someone else, whom which he was talking to. So think to myself, why is SHE here? So that makes me Lucid. So I almost go without stabilizing, but I remembered before going through a door. So I think to myself "What can I do to comple-" But then, the very intrusive thought comes in "DON'T THINK OF YOURSELF SLEEPING" Along with mental images of me sleeping. So I think nonono- but I was already fading. So I think, "I'm not going to let this Lucid slide!" I start fading back in, but then I woke up. Luckily, I managed a DEILD, and plunged back into the dream. Just a few minutes later, while doing nothing on the subject, the same wave of "DON'T THINK OF YOURSELF SLEEPING" came in and woke me for good.

tl:dr When lucid I can't stop thinking of myself sleeping which pulls me out of the Lucid.

So how can I, well not think about not sleeping while Lucid? I generally have a disobedient mind, so I feared something like this would happen.

Also, this Lucid, though how short and dissatisfying, has given me inspiration, and am going for the DEILD method as of today and on.