Anger isn’t bad, none of our emotions are good or bad, they just are human. You can’t tell someone not to be sad or angry just as you can’t tell them not to be happy when they are. Emotions drive us to action, as you saw in the analogy of the iceberg, and sometimes, anger is what can motivate us to make a change. Many things can trigger us to feel angry, but the next time you experience the hot blood starting to rise to your cheeks and your hands clench up into a fist and your breathing becomes fast, pause and do a self check if you want to allow a disproportionate and most likely harmful reaction to escape you rather than thoughtfully choosing a response that will help solve the situation rather than make it even more upsetting.