I see that a recurring theme in this thread is consciousness etc. This is a very good thread!
I would like to add a bit of my own understanding on this matter. But first of all a tiny digression - eastern thought and eastern spirituality is far more developed than western, “scientific” techniques etc. In fact, when the “new age” started (1 AD), the eastern world was already very old then. Today is in fact the 5th millenium in many of these calendars (if I’m not mistaken).
Anyway, the point is that if you look into it, you would be surprised as to what people have been developing. The west is very new, very immature and undeveloped. Hence the focus here on “science” and material things. Notice how all the “industrialized” and “wealthy” countries are western? Whereas the east is considered “poor” etc? Do you know why? It’s because the east has been developing something else, something far more important than material wealth and “science” - the human mind/existence. I say existence because we are not the mind.
Now onto the real subject of what I want to say here, touched upon by the last sentence. We as humans are in fact just manifestations of our true forms, which is pure consciousness/spiritual beings. But what we usually do in our everyday lives is to associate with this manifestation.
So, when we think, we become associated with that thought. When we get angry, we associate ourselves with that anger, we become that anger. Just reflect on this, and you’ll be amazed. When we’re angry, we’re not ourselves. You lose yourself and you become the anger (roughly speaking). In fact, next time you’re angry, become aware that you are angry. It is in that awareness that you realize that you are NOT the anger - you are separate from it! The anger is happening to you, but you are just aware of it, separate from it.
And there’s the key. This can help a lot for LD’s, but it is far more than that. Awareness is the key to our existence. Try to go about your day being aware of yourself. When walking, don’t think about getting to your destination, or something else. Just walk - just be! Be aware that you are walking - become the walking! Likewise when sitting or doing anything else, do it for the sake of itself. When washing the dishes, wash them to wash the dishes!
Another point - our false sense of self. Note that our brains are wonderful machines, beautiful constructions of nature. The mind/brain is the most complicated structure in all of nature. Nothing man-made can even come close to approximating it. Now when the mind produces a thought, we as consciousness associate ourselves with that thought, as I’ve said. Now the thing is that from this process, we tend to associate ourselves with our human self. The mind is wonderfully complex, and naturally has an ego counterpart to deal with others like itself. The trick is that we have become associated with our egos. When we go about our daily lives, we are Joe or Sally or whoever.
This is why Buddhist (etc) teachings say that the world is maya, or samsara - an illusion. We buy into the illusion because we become it!
What I am suggesting is that try to go about being aware of yourself. In fact this technique is called vipassana, and is a powerful technique. Just go about being aware, remember that you are. Not that you are Joe or you are Sally, but that you are. In fact, you are not even Joe or Sally!
Not only does this apply to LD’ing, but also to everyday life. Soon, you will come to see that you are not who you think you are. In fact, some gurus describe enlightenment as a shift of perspective - you are aware that you are separate from the mind and body.
The largest obstacles to this are (1) the body and (2) the mind. In fact these are the only obstacles. The body is easily handled - all you need is relaxation. Meditation helps to get the knack of awareness developed. In meditation it is common practice to dissociate yourself from your body - “drop” your body, as it were. What helps is that first just become aware of your body, don’t try to forcibly “forget” it! Be aware of your body, and it will naturally relax. #2 is similar, but takes more time. Just be aware of your thoughts.
(Another great technique is to become aware of the breath - just notice the rise and fall of your belly. Follow your breath - don’t control it, just watch it. In fact this is the method with which Buddha became enlightened. It is a very simple and powerful method, because in becoming aware of your breath, you are aware of the here and now, of reality. Your moods fade and disappear, and your thoughts as well. You just become yourself.)
What I would like to emphasize, though, is don’t fight! Don’t fight your thoughts - it’s not a “battle” - your mind is not your “enemy.” In fact, your mind is your closest friend! People who are fully aware (i.e. enlightened) describe being in perfect harmony with the mind. Normally the mind is dominating you, but your nature is that you should be “master.” When aware, you will naturally “regain control” (there is nothing really to “regain” though, or to “control” - I’m merely using these words for a lack of better ones). So the point is not to fight the mind, but to just step beyond it. The simple act of witnessing your thoughts shows that you are not your thoughts.
Wow, I was just intending on shedding some light on this matter, but this turned into a full-blown post on awareness! Anyway I welcome any comments or questions.
Well, we do have multitasking, but that does not occur on the consious level. As far as I know, our consiousness focusses at only one thing at the time. Maybe that is what defines consiousness.
Often times cops will ask you to retrieve your registration for your vehicle, while your busy looking in your dash he will ask you another question like ‘what is your address.’ If you pause to answer him he will suspect that you are drinking. Supposedly, this is a sign of your inability to divide your consciouness. Which is a symptom of being drunk. 
now lets have beer