BTW, I refuse to mention everytime I'm off to make a coffee as I do that every twenty to 30 minutes (literally - I normally always have a coffee to hand) as I'd forever be saying "off for a coffee.........". Just take it as a given.
Weened myself off very regular coffees a couple of weeks ago and had a horrendous headache for two days. Now, the coffees are occasional...but the tea isn't!
I have never drunk tea but copious cups of double espressos (only in a china cup) together with the occasional cigarette were my poison. After I was told to stop both I have tried all sorts of decaf but it just doesn't hit the spot for me; can't remember when I last had a coffee.