Why does repeated use of sessions increase their effectiveness?
This is because the subconscious mind does not differentiate between reality and the imaginary world. Repeated use of the imagery created by the sessions builds permanent experiences that result in the subconscious mind changing our behaviour patterns. What happens is that new neural pathways are created in our brain from the imagined experiences just as if we experienced these things for real. Just like a well-worn path, these new neural pathways will become the norm for our behaviour since our subconscious mind usually takes the easiest route when it comes to generating behaviour. The result is that behaviour we perceive as undesirable is changed to behaviour we are happier with.