I'm not cutting out coffee altogether, I am going to try and limit myself to three cups per day. I realise that for most people, three is probably quite a lot already - but those people don't know what my regular coffee intake is like - trust me, three is much less. I'll be replacing the gaps with tea - while, while still caffeinated, is far less so. Maybe after a while I'll get it down to one per day
I did give up caffeine entirely at one point - that was 2 weeks of hell while trying to get over the widthdrawl systems, during which I was pretty much useless to everyone. I think I went for something like 6 months without in total, then started to reintroduce it to my life.
The ultimate goal of this is to help reduce my blood pressure, which is just a touch higher than it should be.