12 year chain on me

Hello everyone. I am 24 years old and I have been watching porn since I was 12. When I discovered porn with my friend at the time we thought we found something fantastic and had no idea how bad this could be for me in the long run. I never had a real life girlfriend since I was in my room all of the time and dated online which made me a complete loser. I was overweight and had no self respect. I was verbally bullied for years over video games which all made me want to watch porn more. At the time I was probably watching it once a day. Fast forward I now have no close friends or family that I can talk to about my problem and it has been a struggle to get this chain off of me. I now only watch it maybe twice a week and other times I’m off of it a week. I have a real life girlfriend but she has no idea about this because it is my issue to fix and not hers, plus we have been doing great. My self respect is much better and I have lost a good amount of weight. There are times where I have no drive to become the best version of myself because I am always tired and have zero energy. I also have brain fog that has been a huge struggle to me because I cannot remember much to save my life. It all bothers me so much because I know I have so much potential but I keep pushing myself down and ontop of that I need to be the best man for my girlfriend and could potentially become my wife someday. This childhood nightmare has been with me for most of my life.