I don't remember how I got started in to coffee drinking business to help me wake up. But I have been doing it for far too long. I had to have coffee in the morning for me to begin to do something. 3-4 large cups a day (at least) was normal for me.
I don't think a lot of people realize but caffeine addiction is not very different from other forms of addiction (as to how addictions in generally work, not necessarily how much damage they do to you). So my headaches for not having coffee was symptoms of withdrawal from caffeine. I have learned from others who also tried to quit drinking coffee they had to deal with really bad headaches.
My main reason for trying to quit caffeine (as mentioned before) is anxiety. I think I have recovered 90% from my anxiety just by quitting coffee. I am also taking supplements like st. John's wort, which I believe helped me a lot too, along with heavy exercise.
Oh! And I forgot about the dreams! :)
This might sound as an exaggeration, but I don't think I have dreamed for the last ten years or so. Or at least dreams I can consciously remember. The week after I stopped drinking coffee, every night I have been having the most vivid dreams you could imagine. Its amazing! :)
After dropping out of college, this might be the second best decision I ever made. I am so excited I can't stop writing about it. :)