My advice is this. First, stop making yourself feel bad about porn, about your internet use, about your social anxiety. It's not a problem, its a condition. You're not broken, you don't need fixing. What you will BENEFIT from, what we all will benefit from, is balance. Once we are in a state of imbalance, things can get kind of weird, kind of "out of kilter" and that can lead to all sorts of bad thoughts, about ourselves, and about others. The first thing is to introduce some balance. Go outside, take a walk. Say hello to the people you pass in the street, in the grocery aisle. Start easy, with a smile, at yourself in the mirror when you wake up. At others in your life. Remind yourself that you are a blessing, and you're blessed to have those around you. Smile. Start with this, and see where it leads you. :)