There are two kinds of anger. One comes when the unexpected happens like  a rape, a mugging, or a senseless death. The other comes from expectation. Both can destroy people.
     When something bad happens unexpectedly it makes us angry. We have a right to feel angry for a little while. Before we let it consume us and keep us from moving forward, we have to at some point stop asking WHY ME and start asking WHY NOT ME. This kind of anger can be turned into positive energy that we can use.
     Anger we feel when our expectations aren't met is a waste of time and is useless. It can literally make you sick. All it does, is make you a very unpleasant person to be around. It makes us feel sorry for ourselves and we tend to bring others down with us, because boohoo land is a lonely place. Anger doesn't doesn't like to be alone so it will make you spread it around. If you are angry then whomever you meet will be given a taste of it, and will make them angry in return. Makes for bad karma all around. This kind of anger only saps us of our strength, keeps us from seeing good, and is totally exhausting.
     So figure out why you are angry. If it comes from the unexpected then ask yourself how you can use it in a positive way. If it comes from unmet expectation then you need to get over it. Throw it away as fast and as far as you can. You'll be glad you did!