I've switched to decaf coffee, because I still like coffee and the morning ritual. But I limit myself to 2 cups, and I have herbal tea later in the day if I still want something to sip on.
The same goes for (added) sugar - it's amazing how you feel when you stop eating candy/ice cream/sweetened drinks/etc. And it's surprising how bad you feel when do you have sugar after you've been off a while - same as the author's experience with caffeine.