I was drinking too much of it, it became a problem - tolerance, withdrawal, messed up sleep cycles. Also I've read that it stresses adrenal glands and may cause cortisol issues.

Bottomline is - I want a sustainable lifestyle, and with coffee it became unsustainable.

This year I've learned that to achieve my goals I have to learn to think long term, treat it as a marathon, not a sprint. From a big picture point of view, steady, measured, consistent pace is better than short term highs followed by inevitable lows.

Green tea is fine tho =)