Questons regarding nofap

Ive been on nofap for more than two years now. My longest streak was 80 days long and i can say they were the best days of my life. After that though my streaks have been not more than 2 weeks long. its gotten to a point where i dont need porn, but i do need to wank every few days just to keep myself from feeling stressed. Considering nofap addresses porn addiction, is masturbating without porn a normal practice. i will confess that i do feel shitty after masturbating.