Subliminal Messages and Positive Affirmations

I have been experimenting with subliminal messages for the past couple years, ever since I listened to a subliminal CD for the first time and had amazing results from it. I bought a few more CD's from the same manufacturer, but didn't see near the results of that first one, which I only listened to initially because of the ocean waves (I figured it would be good to sleep to). After two weeks of that, I couldn't help but notice tremendous effects that were all related to that CD subject.

Anyway, I started making my own, but haven't really had any good results. So I was wondering if anyone can recommend good subliminal recordings, or know "the key" to making effective affirmations that the subconscious mind actually responds to.