Dream Reviewing/MILD
The key to constant awareness comes from the fundamental idea that all reality is another facet of a dream. Time is illusionary. Today will soon fade and cease to exist. Everything you know in this world can be changed in an instant, at any time, for any reason. This is just the same way your dreams are. This is what Dream Yoga teaches. All things are illusionary, all things change, and all things fade. This is the reality of existence.
This will be a lot easier for people who have good recall. But if you have terrible recall, don't despair! You can still do it.
Try to remember the most recent vivid dream you had. If you keep a dream journal, read it over a couple of times.
Were there any recurring themes or elements in your dream that you missed?
What should have tipped you off that it was a dream?
What would you have done if you had gotten lucid?
Imagine a scenario where you did become lucid in the dream.
Now, the next time you go to bed, after you've cleared your thoughts, just imagine yourself in that dream. Imagine that you are lucid. The key is to be imagining this as you fall asleep--if it was your last thought, it might be your first once you're dreaming!
As you're visualizing, remember to not just imagine yourself flying or what have you. Keep reminding yourself that you're dreaming! Otherwise you may just induce a flying non-lucid.