There is not enough information to pinpoint the cause. It could be the onset of schizophrenia with mainly negative symptoms manifesting. It could be an allergic reaction to mold exposure. It could be the result of poor diet, not enough DHA, vitamins, mineral imbalances, sensitivity to intake of PUFA, poor sleep, sleep apnea, chronic stress, ADD, histamine intolerance, sensitivity to gluten and casein exorphins, etc.
You have to do a lot of research, try out various supplements and diets, to figure out the issue. Stay away from prescription pharmaceuticals. Each has side effects which will cause more problems. Do not watch porn or masturbate.
Try cutting out all gluten, dairy products, processed foods to start. Try fasting for 36 hours and then introduce foods one by one to troubleshoot. Start with boiled, peeled potatoes.
