Starting something for the better

Today, i had a pretty much bad day at school, first some bullies, then some teacher of mine. Anyway. I had after-hours a revelation and wanted to start doing calisthenics and nofap, for long as i can. Now here it comes the hard part. I am pretty addicted to porn. When i was 13 i started fapping because of bullying and because of some girls, and now I'm pretty addicted bc of this. Even though I had a girlfriend, i have a big lack of trust and confidence in myself and it's awful. I really want to be a social and talkative person. I just want to Get rid of this horrible urge to fap. I can last 3-4 day. If I'm thinking about porn then, I'm going to fap and finish quick.
Help guys , any tips are good.