Liberals seem to be angry about things. They can’t debate and discuss the issues of the day. They get angry like 2 year olds when they don’t get their way, they lose elections, don’t see the world react to their angst about global warming, transgender issues, race issues, etc.
So not surprising, that the liberals are prone to depression. They are depressed that the utopia they dream of doesn’t exist.
Conservative mentality is to depend on yourself. Liberal mentality is to depend on others. Liberals are still children and want their ever present parent to take care of everything.