I was wondering this question myself. Here is my case. Months ago i posted on this about wanting to regain sex drive, and wanting to find a significant other. Well i have done that, and sex is actually now a positive part of our relationship. I found that after about 4 weeks of not looking at any type of P and MB that it was far easier for me. I think i kind of reset my mind. Its alot easier for me to get aroused by my girlfriend, and i feel and have saw from other users that this is a big key.
Me and my girlfriend has been together for about 3 weeks now, again we have been having sex with orgasm. Everything has been going way better than i expected. However sometimes the urge to look at P and MB comes back into my head. Now i don't act upon it, but sometimes i come dangerously close to doing so. Its a little discouraging because i ask myself "why am i still getting aroused by these P images in my head". I have read up on the subject, i wanted to know, if i don't act out and MB to these images again, will it start to become easier. I know when we MB to something, orgasm can reinforce it, but again if i stay away and fight off the urges, do they become less and less. I know it will take much longer than four weeks, but again things have been going alot better lately. I feel like i'm making progress, but i don't wanna fall back into P.