My own personal theory on this matter is that a lot of emotional state is feedback loops. Have a positive environment where things tend to go well and everyone

My own personal theory on this matter is that a lot of emotional state is feedback loops. Have a positive environment where things tend to go well and everyone else likes you? Then you share in to that same environment (drink the Koolaid). Have a mostly neutral or slightly negative environment? Then you end up circling the drain hoping to have an energy exchange that allows you escape velocity in to the above rather than... Having a mostly negative environment; even if it's just a little. The slow crushing weight of reality and those around you chips away at every part of your being and self until there is nothing left but a broken and hateful individual. May become either a neutron star (hermit) or go supernova (usually leading to jail or death).