Read the Servo Library section in the Arduino Reference section. From this and other posts you don't seem to be familiar with the concept of continuous rotation servos.
Not at all. Never used these kind. I've used industrial servos with encoders , driven by DeviceNet drivers but not the 5V continuous rotation servo that I think is being used in this post. Also, I have only been learning software (C++) since last Oct so there's still quite a bit I haven't done yet. That's why I asked. When I run across a post dealing with something I haven't worked with I try to learn whatever I can from it. As you can imagine, it often takes more than one post to learn a subject. This one was educational because the OP failed to notice he was setting the state to ONE at the beginning of his main loop and couldn't understand why it kept repeating. It's a beginner mistake but I didn't see it because I didn't know what I was looking at or didn't know where to look. Now I know.