It is not the emotion anger that is bad . Because people over the centuries have stated that anger is sinful or bad or wrong, we forget to teach people how to deal appropriately with anger. Voicing ones anger and expressing said anger without violence is a healthy approach to deal with the emotion. Exercise, meditation, yoga, and martial arts are common methods for dealing with anger. The stage of depression is commonly what most people call grief whereas the other stages are sometimes overlooked.
Depression is only a part of the grieving process no more and no less valid than the other stages.
When our defenses of anger and denial finally breakdown, depression inevitably follows. The loss becomes an acute emotional pain. We become hopeless and often feel helpless. The duration of this time of sadness varies, but the frequency waxes and wanes as well. We may become depressed then feels like things are getting better.