Once he started doing it, everything in his life declined. He stopped having healthy relationships with his siblings and his friends at school. He started to be much more angry and even sometimes violent, and when we examine the situations in detail, we see that none of it is justified, and he's always the one saying everyone is out to get him when he is actually the one doing wrong. He's become a lot more arrogant and a lot more reserved at school and obnoxious at home. His grades at school declined sharply. He's developing a narcissistic personality, and won't participate in things that he doesn't personally see any value or benefit in, even when everyone around him tries to convince him it's a good or worthwhile activity. Overall he's declining in mental and emotional health.