I started to apply everything about productivity that I learned and I feel so unproductive

I am studying some productivity stuff like GTD and I apply everything of them. I can see my work and my emotions are better. But I am not the person I was. I am not living for my life. I forgot and I am creating to live for productivity for productivity's sake. I am trying to be more productive than doing something. Are there really people who are productive? How? I think productivity is a cult.