Loving sleep is vital for becoming a proper lucid dreamer. And many forget about it. It must be the first issue you deal with and make sure it's there. Although lucidity is more concerned with wakefulness than sleeping, I'm sure, practicing lucid dreaming on top of a healthy basis of sleep and bed-time is of vital importance. One of the reasons for this, is the fact that when practicing WBTB you are relying on a (conditioned) sleep rhythm of getting in/out of bed on consistent recurring times. Because only then you can fully make use of your biological clock (neurotransmitters) generating full-blown periods of REM-sleep once you get into bed again to start your nap (see Learn-section). The most important reason actually for regulating your sleep and paying more attention to sleep in general, is to start loving it, start prioritizing it (over watching TV, working, eating, and whatever) and getting more intimate with feelings and body sensations that are accompanied with feeling sleepy. No matter what kind of art or sport you attempt to master, you have to become one with it.
For lucid dreaming, it all just starts with sleeping properly.