Not long. I'm very sensitive to internal changes although. The changes often come about pretty quickly for me. I feel changed after each listening of paraliminals. Oh, often I just notice that I act differently - speak in a different way, take things less seriously, etc. All tapes doesn't give much of a different feel.
At the beginning of using self esteem superchager, I would always whistle or sing to myself. I was joyful.
How about you?