The good things for 30, 60 and 90

Hi there....
I would like to quit starting from today... I have searched the web for the good side of quitting porn and masturbation but some say maximum 28 days should be fine just wanted to know more about the reason for 30 or 60 or 90 ? I have been doing it for 7 years 6-7 times every week from going RAW 3-4 times a day to twice a day till the point of my (P) not being strong as it was or logging me out on the most important situations when I am with a girl knowing it's hugely embarrassing but also knowing there is nothing that I can do that moment which has happened 4 times with 4 different girls I just stop talking to them as I think I am wasting there time... Why would they wait on me when other dudes match the requirements of sex ? and when I am doing 6 days a week of work if masturbate I have this urge not to even go work and relax at home or when I have a goal in life such as earning my driving license etc such as a progress it does not let me and I get angry at my self after knowing I have touched my (P) for six days imagine 90 days I want to know something that will motivate me please Anyways the reason I am asking this question is I would want to improve my (P) as it's time to act on... I have searched the forum for the answer but could not find any results... I would like to know the goals I am reaching beside being porn free person and recovering my (P) something I can remind my self such as the positive side of quitting in 30, 60 and 90 days as it's not that hard for me to go on it quickly by my 4G phone loading under a second to completely ignoring what my mind is desiring thank you so much