I have a love-hate relationship with coffee. If I drink too much eventually after a few days it will start giving me headaches, and if I drink too little... well, there's that damn caffeine withdrawal to deal with. It's like I'm damned either way. I've been told that too much = headaches is common because it messes with your cholesterol and that triggers headaches for some people.
I was off it for about 3 months. But recently started drinking it again. Need to get off it again and go back to just tea only.
I hear you. Every time I give up somehow it sucks me in. But after nearly two weeks of withdrawals I'm not too keen to slide again. My sleep is better and my nervous system isn't as wired. I've been enjoying tea again, and uncaffeinated drinks.
Good luck quitting again!