What does our anger do to us?

Today I saw a honey bee and they are the species of bee which dies once they have injected a person with venom through their stinger. This also reminds me of something I read recently that someone had answered to the question 'What is anger?' with the words, "It is a punishment we give to ourselves, for somebody else's mistake". What a good way of reminding ourselves that internal anger, or the outward reaction of anger towards another person can actually be damaging to ourselves. Apostle Paul reminds us in Ephesians 4:26 "Be ye angry, and sin not: let not the sun go down on your wrath".