Try this (and I say this as a mental experiment, nothing more): think of how bad things can get. Really. The worst scenario possible. Is it as bad as you imagined it? Or is it rather just boring and petty? You know this because you're already beyond it and what's holding you back is the part of you that just lags behind. The "system update" of our minds takes a long time to fully complete--persevere and you'll discover you get there before you know it.
You do want to quit porn, because if you truly didn't you wouldn't be writing that on this journal. That's a fact because you've made it so; you had that power and you still do. This is the testament to your conscious being, the being that is the whole of you, not just the parasitic parts of porn that prompt various suggestions and desires to you. Most of your mental life and all of who you are is geared towards getting PMO free; hold on to those parts of your being that want that.
And you do want to quit porn because you want true life, not the life of shadows, of screens and fake bullshit. I think quitting porn is a part of sexual self-mastery, but sexual self-mastery is in turn a part of self-mastery overall. It may help to switch your focus to other things, developing new skills, knowledge, start a business, new job, new hobby, whatever, and not focus too hard on streaks, flatlines, etc. Give those things the time they need to rest, while you work the other parts of you that are healthy and ready for action.