"...as opposed to me, not married, no kids, no job and back living with my parents" Your problem is right here. In this context, why were you on facebook looking people up if not trying to find some solace in "Oh, at least I'm doing better than this guy". Fix your own shit. Your happiness, ANYONE's happiness, shouldn't be dependent on other people's station or state of being. You need therapy, you need a plan, and you need to start building yourself up again and avoid bad habits. This world is full of people like this guy and worse, and yet there are sooo many good people who also become successful and happy, later in life no less. Get a grip and delete fb, it's time to move on