This particular habit I've been cultivating for over five months. I stopped for a week because I was insanely busy, and I'm taking a break from my medication. I couldn't motivate myself to do it after going off, and I was worried I was only doing it because I was medicated. I'm happy to say I'm doing it today to prove myself wrong.
I've been cutting back on caffeine finally because I thought it was my medicine giving me anxiety, and I'm pretty sure it's the caffeine. Now I'm usually at about two cups of coffee in the morning (the mug I have is American large, and I always seem to fill it up).