As a kid, I taught myself to realize when I was dreaming. It was cool, because once I was aware that I was dreaming, I could look at a clock and it would be the EXACT time it was in real life. I had to get up at seven, so I would look at my dream clock. If it said 7, I would wake myself up by widening my eyes and grunting. I kind of lost the ability after a while, and didn't know about LDs at the time