I also have a psychiatric problem and problems relating to anxiety with socialising, so you're not incomparable to anyone because I have the same situation. In the UK, we have a disability rate of around 1 in 5 for adults. Assuming physical and mental disabilities are equally common, that's 1 in 10 with a psychiatric condition and many of the young men with that condition will have porn problems. This is especially true, because porn problems worsen your mental health and must therefore increase your risk of developing psychiatric conditions.
Regarding the psychiatric condition, I recommend you get into CBT (cognitive behavioural therapy). If you're smart enough to understand the psychology, you can do this yourself with just a few books. If not, you'll need to see a professional therapist. I would recommend you buy books on low self-esteem, social anxiety and "The Willpower Instinct", by Kelly McGonigal, if you choose the book method.