The most successful state of mind for me, is too be confident about it. Just be relaxed while laying down, and start thinking of something. Most of my thoughts then (unless I enter sleep paralysis, instead of a dream first) become words, then images, and then finally a scene. Also, every time you wake up from now on, test to see if you are dreaming, like a reality check of some sort. A lot of times you might be lucid in a false awakening and not realize it. Like waking out of bed (even though you just laid down to take a nap) and walking through your door and not question why you are up, when you are trying to lucid dream. hope that helps, good luck!