Thanks for your honesty. I have struggled with porn.
GTD has helped; in particular as I am more organized and feel in control more often. Porn for me is usually about feeling powerless or bored and needing to medicate those emotions.
It might help to stay aware of what you are feeling: powerless; bored; frustrated; angry; lonely; etc. Once you identify these emotions then take it a step further and determine what you is making you feel this way.
Turn the energy you would use to look at porn into positive energy improving your GTD system. This in turn will help you feel in control, and lessen the desire to look at porn.
Working on your higher levels of life, above the runway stuff (the news, daily tasks) and being proactive about your longer term goals may bring your level of excitement up and find a legitimate expression that you need. Especially as you acheive some exciting goals.
I also had my computer tech guru install a filter.
Thanks for bringing it up. I never made the connection until you mentioned it.