I have a question for those who know a thing or two about evolutionary psychology.
I know that anger is a healthy emotion. If you never felt angry, people could walk all over you and rip you off, and you wouldn't do anything about it.
However, how is it is beneficial for a person to sometimes feel frustrated....like when a person is trying to complete a task and they run into difficulties and get frustrated as a result?
For example, I became a little frustrated a few days ago when I was volunteering at a public library. I was stocking book shelves when I accidentally knocked a few books off of the shelf, causing them to land on the ground (just for the record, I only got somewhat frustrated, nothing abnormal).
Does anyone know why people are programmed to get frustrated at times?