Today is not going well

Today I had a tutorial first thing in the morning (8 am). Having decided to stop picking I'd managed so far through the morning but when my tutorial started the tutor began talking about essays and all of a sudden the urge to pick was overwhelming when I hadn't noticed it before, it was like a switch had been turned on. Since that tutorial I've been fighting a bit with my girlfriend and the picking hasn't really stopped. I'm trying so hard and I feel like such a failure everytime I pick but it happens without me even noticing most of the time. It's getting in the way of my ability to study now and all I want to do is cry because I can't control myself.