I find that when I'm going to sleep if I think about dreaming too much my heart beat gets really powerful and the feeling of it beating keeps me awake. I've been taking about 2 naps a day recently and sleeping for only 4-5 hours a night and it's been helping my recall I've noticed. The problem I've been having with napping though is the people in my house are more prone to wake a napper than they are a sleeper, and so when I'm woken up there is usually something that I have to do and don't have time to write my dream down and it's usually lost within a few minutes. I guess this would be a sort of full day MILD technique. I've also been getting really strange dreams at night, which I'm hoping will help me incubate lucids.