The last few weeks have been rocky. I keep getting into this cycle of looking, more or less briefly, reminding myself that it's bad and closing tabs, then going right back to it an hour or so later, like I completely forget. It's tied very closely to my emotional state: most of the time, it is literally difficult to remember (if I even think about it at all) that looking at sexy whatever is bad for me. That's the amygdala: the part of the brain that deals with deep instinctual things like sleep, hunger, and sex. And it tends to react faster than the higher self-aware part of the brain, which is why I find myself staring at a girl in a short skirt before it even occurs to me that I'm not supposed to.
I can't change how the biological brain works, of course. But it does, and I keep trying to remember that and not let it sidetrack me for more than a few seconds.