Using a massage ball to relieve headaches

I occasionally experience headaches, but they are not frequent. I believe that massaging the scalp overall when I have a headache is effective, and afterward, massaging the back of the neck more thoroughly is even more effective for headaches. So, I purchased a massage ball and use it to massage whenever I have a headache. I lie flat with the round massage ball in the photo against my neck, relax my entire body, and then gently press and move my neck slightly up, down, left, and right. This makes my neck feel refreshed and gives me a clear-headed feeling, so I do it frequently.