I find anger to be an emotion based on anxiety usually at, as you say, the failure of the environment to meet your predefined expectations. Anger is then a too

I find anger to be an emotion based on anxiety usually at, as you say, the failure of the environment to meet your predefined expectations. Anger is then a tool of emotional manipulation to further your need for the environment to meet your expectations. Emotionally manipulating people around you poisons your relationships with them in the long term though.