Well... lucid dreaming and OOBEs are very closely related... my capacity to become lucid in the dreams increased several fold when i started to learn OOBE techniques... even cause some of this techniques involve being aware youre falling asleep, or retaining your consciousness during this process, so when you master it, being aware that youre dreaming is like a by-product of it.
In a certain way, an OOBE can be regarded as a special kind of lucid dream, where youre "dreaming" about the reality: the things you see in this "dream" are the real things that exist in the world, instead the usual dream-stuff, of what the normal dreams are made.

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"Everything we do, everything we are, rests on our personal power. If we have enough of it, one word uttered to us might be sufficient to change the course of our lives. But if we don't have enough personal power, the most magnificent piece of wisdom can be revealed to us and that revelation won't make a damn bit of difference." Don Juan Matus - Tales of Power