You are browsing through a youtube video, and a sudden impulse arise, out of the blue. Its like you need to come alive, the body grips, the mind slips and you 'curiously' just want to 'check' that one x video, just to see it. This one doesn't count. I'll just watch it and get back to what I was doing, no biggies. But you know, that over and over again, this is how the trance gains momentum. The energy follows the image, and here is you are hooked, for the next hour. Your 'curiosity' was that subtle call of your compulsion. Be aware. Pay attention to the little voice that creeps in the background, that's how it usually starts.