This is all about reality checks that are already done. You've been doing them your whole life. By using the reality checks which you have done you whole life, you greatly increase your chance of having a lucid.

This is my Theory:

Your walking in a hallway, you know that your foot is not going to fall through the floor. All you have to do to create a reality check from this is to be aware that it may fall through the floor. After you've done the check, go about your normal business, and don't even think about it. Do this or one of the following EARC's a few times each day (every DIFFERENT time you remember about them):

1) When you sit at your chair at school, you don't fall through it.
2) When you lean against a wall, you don't fall through it.
3) Since people are always observing their environment, always be aware of objects changing shape, as they often do in dreams.
4) Use any other frequently occurring daily experience as a EARC.

How it works:

Since the reality check is made from something you normally "already" do, but is just adapted to become a reality check, your brain can better adapt to it than something totally new. I mean, how often does someone try to stick their finger through their hand, see through their eyelids, or stick their toung through the roof of their mouth? Barely ever, if ever in the natural life. So that’s how it works. You use frequent normal experiences, such as walking (which you have done most of you life) to adapt to become a reality check. The brain gets used to it much more easily since it's such a small change, and since it's actually doing something, like getting you somewhere, or opening a door to a new room, it is much more likely to be used in a dream.

Try using this technique, and tell me what you think .