Forget the whole "learn to dream and remember it with a dream journal" thing if you want to master it…
The secret, is relaxation; not physical relaxation - you can enter a lucid dream whilst standing up - but mental relaxation.
Simply keep your eyes open, and let go of any thought process going on. You want to "stop thinking". Not easy, and it takes weeks, fucking weeks, for your brain to learn to do it correctly. You will feel weird pressures building up in your body, periods where your body just seems to tense and relax without any real reason, the back of your eyes will feel kind of weird, your eyes will roll, you'll have muscle ticks… but eventually, with practice, you get to the point where you can "empty your mind", your eyes will snap shut and you will suddenly get pulled instantly into what I've best seen described as the "phase state". From there, once you've been "pulled asleep", you keep relaxing (your physical body will start to follow), and then you can separate your mental body image from your physical body movements (ie. phantom movement)… *boom* wake induced lucid dream.
>you can't actually stop thinking, there are always things going on in the back of your mind… the objective isn't to eliminate all thought and become a cabbage, it's simply to learn to switch off and "reboot your brain into sleep mode", with you in full conscious control the whole time.
>you can't actually switch your brain off, it's just a figure of speech… it's really hard to explain but extremely intuitive once you've had a taste of success.
>when practising this psuedo-meditation relaxation exercise, there will be many times when your mind simply wanders and you start thinking/daydreaming about things - it's cool, normal, and all part of the process.
>you will have numerous false starts - your eyes will snap shut, you will feel like you're about to get pulled asleep, and then… you'll be able to open your eyes again and it'll seem like you're getting nowhere…
>despite that you're learning to relax, it never actually feels like you're relaxing - on the contrary, it's fucking exausting.
It's the mental side of things, not the physical that you need to focus on. This is why most people never get the hang of it. And i'm serious about it taking fucking weeks of getting nowhere, and then all of a sudden, WHAM you can "fall asleep" almost instantly on a whim. To wake back up you simply start moving your physical body around again…
Take note - relax your mental state and your physical body WILL relax, and you shouldn't fight it, but don't obsess over relaxing your body. The body goes where the mind does, when you've finally learned to "stop thinking" your body will just follow your mind into the sleep state and relax as a consequence.
If you try and relax your body into the state, you will probably enter into *A* trance state, but not the one you're after… you want mind awake, body asleep. Not body asleep, mind drifting all over the place…
>for more information on where to go from there i'd recommend http://obe4u.com/ and Michael Radugas stuff to start with. It's pretty good.