When I started RC's my lucid count went up considerably after about a week and the habit formed. I've never actually done a RC in a dream though, almost every one is a spontaneous "Hey! This is a dream!" moment. Haha I still let some pretty obvious dream signs pass me by though, like the other night I dreamed I was on a bus where I was the only person on board (there wasn't even a driver) and I said to myself "Gosh, this is boring! I wish I was having an LD now... Oh well"