Day 0 / 90 days Hard mode

I am a student and 22 years old. I am fapping since I was 10 years old. In last 6-7 years i have been a addicted to porn so much that there were very few days in a year when i didn't fap. I am a student so most of the time i felt porn is distracting me and reducing my performance in every field, I am not able to concentrate much until/unless there is pressure of exam. I want to reboot my life and quit PMO. Since last year I am not having much pleasure in masturbation and every time I masturbate it felt like my inner power or energy is reducing day by day. There were some days when I go through depression and mood swings and the only way i was able to concentrate on anything was after masturbating. I want to take the challenge for 90 days at least.