What I don't understand is if I do a nap in the afternoon, everybody says that it would be easy to have a lucid dream. But if I do it in the evening, a lot of people say that it is impossible. How does my brain know that I do an afternoon nap and don't want to sleep a longer time?
I also tried DILD / MILD and got a few of my pre-lucid dreams with it, so I started practising WILD. Yea, awareness is one of my problems, at the moment I'm reading a book about the buddistic view on it. ^^

But in general I don't think that WILD in the evening is impossible, it also would not increase my chances if I think this.