Hey former no fapper here with a 6 month record under my belt and just want to give some friendly advice.
For me the first 2 months were the hardest, no porn, no fap, no sex or sexual activities really took a toll on my drive. But through focusing on lifting and studying/reading the urges finally broke giving me a great appreciation for the willpower required.
You can expect after breaking the 2 month period an increase in sexual prowess, energy, focus and general drive. My lifting ability rose steeply after this period as well as my ability to attract girls. I speculate that this was due to increased testosterone affecting muscle and pheromone production.
Although there were some negatives, irritability, agitation and going ape shit now and then. But its the same kicking any addiction, former misuse of opiates, alcohol, weed and tobacco will teach you this.
Diminishing returns set in for me at the 4-5 month mark, it is likely that once your body adjusts to the new norm you start to forget what it used to feel like. Making you feel like the grass is greener on the other side.
I decided to end it once I broke 6 months and continue on with no porn for a further 2 months.
The topic comes up once in a while with friends and everyone either thinks your a god or mentally ill, but in hindsight I see the journey as simply a self building exercise. One that I intend to pick back up sometime.
Good luck guys its worth it but in moderation, holding out for 6+ months would be edging on extreme in my personal opinion. But only you can be the judge of this, I'm sure there could be long term benefits but for a young guy it wasn't for me.