I have one large cup a day, and if I don't have that cup for about 48 hours, I get a horrific headache to the point where my head feels like it will explode if I cough. Thinking I've had enough, I decided to start mixing decaf with regular to slowly reduce my intake so I'm not held hostage by it anymore. Other than the coffee, I don't drink any other caffeinated drinks. Should I continue this process or man up and go cold turkey and suffer for a few weeks? What has worked for others?