I do suffer insomnia, and though I haven't relied on using this particular phenomenon to fall asleep, I have noticed it, usually between sleeping and waking. Ty

I do suffer insomnia, and though I haven't relied on using this particular phenomenon to fall asleep, I have noticed it, usually between sleeping and waking. Typically, I notice it upon being awoken by soft stimulus but not feeling the need to completely wake, and I have noticed them when falling asleep (presumably more common than I observe, as I only remember instances where I have actually failed to fully sleep). They typically fade for me if I pay too close attention, however, and I transition to full wakefullness. My issue is more of an 'unquiet and overactive mind' as well as this irrational (but very unshakable) sense that there simply aren't enough hours in the day to accomplish my goals, and that sleeping would be admitting failure in some regard.