I wake up right as I realize my dream sign. I get excited all the sudden that I know this is a dream and that I can control it. So... how do I keep myself from waking up? From getting to excited?

I was being chased down a street (by what?) so I turned down an ally and had the sensation I was trudging through molasses, and all the sudden I realized that this only happened in dreams. I started to move faster then realized why not even faster so I was now driving a car and woke up seconds latter. Total lucidy is always only 5-10 seconds before I wake myself up.