Everyone needs to find what works for them. The way I frame it for myself (I discuss it more here) is:

Strive to:
Pay attention to all your experiences
Reflect upon your experiences (are they dreamlike?)
Practice recalling your experiences, (and remember your goals to be lucid in dreams)
Do this both day and night

You just start doing this more and more. Once you start getting used to the feeling of being tuned in, and aware of your present experience (and of your awareness!), the feeling of being on auto-pilot (not paying attention, reacting and not reflecting) becomes more and more obvious. You'll start catching yourself more and more having fallen into that mind-less state.

Some excellent and very approachable books to read on the subject of mindfulness are:
"Mindfulness In plain English"
and
"Wherever You Go, There You Are: Mindfulness Meditation in Everyday Life"

These discuss primarily building attention and focus (and somewhat about reflection, but for different goals)

Since these are not LD books, you need to add in elements needed for LDing, which as I said are reflection about your state, and memory (of goals, of dreaming, of your experiences).