When a desire with attachment is thwarted or denied, it turns to anger. Anger arises from dissatisfaction, from not getting what you want or getting what you don’t want, from the expectation unfulfilled. You become more and more attached to your expected outcome and when it doesn’t arrive you get angry. You seek wholeness, completion, and happiness in the fulfillment of desire with attachment and are constantly in dissatisfaction. Dissatisfaction is the main form of suffering. Dissatisfaction and anger arise from feeling limited, betrayed, from not speaking up, from being pushed around, by not being seen or heard, by being passive and feeling futility. It starts as resentment. Resentment turns into frustration. Frustration turns into anger and becomes rage when not addressed.