The best pieces of advice I got on lucid dreaming come from Naiya and I forgot the other person... dang...

Naiya said that you should give every technique a good few weeks before quitting.  You are basically rewiring how your brain processes things innately, so it will take time.  I use 90 days because 2 weeks or so humans can build a routine, and 3 months we can build a habit.

The other person, who I really hate that I forgot their name, said (His thread was called "New Key to lucid dreaming") to imagine that lucid dreaming is easy and that you are a natural.  Don't just say it, but believe it.  Once I incorporated this a bit, I started to have better dream clarity.  It's worth a shot.