I was having this interesting dream (non-lucid), after which I woke up. I was still pretty tired so I didn't open my eyes and just kept lying in bed. I was wondering if I could return to that dream and kept picturing it in my mind. After a while the images started to turn more real and soon enough I realized "holy shit I'm back in that dream!" It felt really interesting to enter a dream this way, usually when I'm falling asleep in the morning after waking up my mind just starts wandering and I lose consciousness and start dreaming about random stuff.