^^, you have a nice imagination, now the only thing lacking is that you don't exercise it enough.
When thinking of 6 am an image of the rooster crowing (is this the right word?) and the sun perks up over your window warming your face. (or you can imagine the sun as your love partner, and she's warming you up every 6 am in the morning)
This works for me, down side it get's you hot early on in the morning. >,< upside, you wake up at 6 am
picture this before you sleep (imagine 6 then the letters am next to it, then the image i described above in your bed)