What drives someone to give away their last meal, even if it means they go without, especially if they grew up with less?

Despite their ego, how do Leos demonstrate high emotional intelligence in their interactions with others?
Is it common for people to lead a successful life for years after a psychotic break and then have another episode out of the blue?
Is there a point when someone realizes that their excuses are too ridiculous, or do they just keep making them up?