I went cold turkey off that, I suddenly had to take a prescription med that raised my heart rate and taking it with any coffee left me barely able to think. I don't get withdrawals with headaches and pain, never have, but the first time I went off the 20-cups-a-day dosage I suddenly realized that I did not in fact have an anxiety condition. (I also realized eating was kind of fun.)

I resumed drinking tea, then coffee, then a lot of coffee, but I've got to say I'm a lot more mindful now, I don't just hang out in front of the computer making pot after pot and such, and I try to get food instead of coffee if I'm out and want something fun to taste.