It is important to feel the anger without judging it, without attempting to find meaning in it. It may take many forms: anger at the health-care system, at life, at your loved one for leaving. Life is unfair. Death is unfair. Anger is a natural reaction to the unfairness of loss.
If the corporations have their way, the Earth will be killed, and that's in your lifetime. It's revolting to me that students are being trained to work in corporations. It's obscene to me that the corporations are running the world. We've got to get cross. Anger is an appropriate emotion.
Holding on to anger is like grasping a hot coal with the intent of throwing it at someone else; you are the one who gets burned. A good friend who points out mistakes and imperfections and rebukes evil is to be respected as if he reveals a secret of hidden treasure.
When anger is not trampling roughshod through our nervous system, it is sitting sullenly in some unspecified internal organ. "She's got a lot of anger in her," people will say (it nestles, presumably, somewhere in the gut), or, "He's a deeply angry man" (as opposed, presumably, to a superficially angry one). If anger isn't released, it "turns inward" and metamorphoses into another creature altogether.