You do need to address some serious issues at a Professional level, and accessing this in the UK is free and fairly simple on the NHS. Your first step is to see your GP and explain your concerns about specific mental health issues, say your anger issues/depression driven by identity confusion.

This should get you a referral to a Psychologist - make sure you have a rapport with whoever you see - where the onus is on you to be as honest as you were here in order to be able to progress through these issues. These sessions are also free on the NHS, we are covered for all Mental Health treatment.

As to your obsession with increasingly disturbing pornographic imagery, this is quite common behaviour for those who find they are becoming addicted and in increasing need of bigger 'thrills'. This, imo, is a huge problem. It can lead you into dark places where the lines between fantasy and reality are blurred, where your opinions of people become warped and where that line where things are not only unacceptable, but illegal is soon behind you. The next thing you know, the Police are kicking your door down at 4am and you are explaining your issues to the Prison Psychologist. I urge you to try to adopt a more measured attitude to this subject.

Dave.