It is really like asking the converted isn't it??
But I also started as a skeptic. I remember I was attracted to the book because I knew I knew I needed something to get organised and the title of the book resonated with me. I remember speaking to my manager at the time about it and she said something like 'oh, yeah ... it's just like every other productivity book - you make lists'. I could see her point but something told me it could be different.
Am I glad I listened to my gut! 10+ years later and there is NO way I could have accomplished what I have been able to accomplish if I didn't have GTD and GTD Connect. And I've seen it work for people from different walks of life.
So, my suggestion - give it a try. by the time you get through a little bit of collect (including a brainstorm), process and organise you'll get an inkling of how free your mind can get and it'll keep you going.