Long time Fapper, new to NoFap. Any advice on abstinence

I hate the idea of posting something on here asking if others have been through what I have because I feel like I know the answer already and it's something I have hated to admit. I first heard about NoFap back in Sept/14 and it pains me to think that was when I first struggled to come to the conclusion that I may be jerking it way too much. I turn 24 this year now and the past 2 and a half years have seen little to know progress in abstaining from PMOing and it is absolutely driving me crazy, my complete lack of self control. I read about 100 day reboots and cannot even fathom such a long streak, and it really makes me question myself and how far I've come (I truly have so much to be thankful for) and how far back I am really lagging. I don't know why but just the enticement of porn is too much for me. I will continually make concessions with myself, just another site, just another page, one more tab. And then the stages of no masturbating, okay edging, to just plain finishing. And then the near immediate regret.
I hate it when my girlfriend of 3+ years things I am losing interest in her or sex because I can't get hard enough or finish. I hate the fact that I can name more porn sites off the top of my head then regular websites. I hate to think about the sheer amount of time I have spent watching porn the past few years. I used to think if I painted it all in a negative light that I would turn off of it, now I just feel that way about myself. I can even see the extremes and the notches my porn addiction is increasing, to more and more ridiculous, disturbing and depressing fantasies. I don't know where to turn or how to even progress to a month, I have done cold showers, love them in fact, I have hobbies to consume my time, thought I truly believe it comes down to flat out self control. What I want to know from you guys is how was your first month, hell, a week without PMOing? What changes did you push yourself to make, and implement? How were you able to keep it in the back of your mind, and stop yourself be consumed by temptations? I want to be free but with how convenient it is with just a login from my laptop I don't know how. I will tell you I have struggled with a variety of drugs, and have been able to stop them cold turkey, albeit with difficulty, however successfully. Despite that, this is a whole new monster for me and has been the most struggling and one of the most hardest things (figuratively of course) I have dealt with.