While pornography isn't the root of all evil, I wonder if self-denial in general is good for you. Does giving up an arbitrary thing for a month give you benefit

While pornography isn't the root of all evil, I wonder if self-denial in general is good for you. Does giving up an arbitrary thing for a month give you benefits just from the exertion of willpower? Has anyone quantified it? I also suspect the people who take No Nut November seriously include a higher than chance number with actual problem behaviour. Maybe the not-quite-porn-addicts and the not-quite-alcoholics self-select for No Nut November and Sober October because they know they've got a problem, and these months provide a nudge to make a change.