Do all social hazards result from an individuals lifestyle choice? Explain

I think in someway social hazards do affect you. But then again you choose who you are and how you choose to react to things. Seeing things like the walkout on social media might make you happy that kids are standing up against gun control. But then you could see the news of syria kids, and you could immediately feel depressed or sad. I know social media has definitely made me feel insecure and lonely, makes other people's lives look better than mine.