I only go for emotionally upsetting events, associations, and negative things someone has said to you. I never take away pain purposely, as I don't want to cover up an organic condition. I try to put YOU back in control of your own mind and body. You are going back to a previous experience at a level below your conscious awareness. No, it doesn't always work, but it usually helps a lot.
Headaches become less frequent and lesssevere.
I only have a headache when I'm really sick, maybe once in three years or so. We're all built pretty much the same, but emotionally we're very different because of our experiences and our reaction to them. Keep this in mind. Many people keep or feign their headaches as a means of getting some compensation or controlling their environment. These people I cannot help.