I deal with it by looking it up. It's very interesting.
http://en.wikipedia.org/wiki/Anger
For instance...
Wikipedia wrote:
People feel angry when they sense that they or someone they care about has been offended, when they are certain about the nature and cause of the angering event, when they are certain someone else is responsible, and when they feel they can still influence the situation or cope with it.
[...]
The angry person usually finds the cause of their anger in an intentional, personal, and controllable aspect of another person's behavior. This explanation, however, is based on the intuitions of the angry person who experiences a loss in self-monitoring capacity and objective observability as a result of their emotion. Anger can be of multicausal origin, some of which may be remote events, but people rarely find more than one cause for their anger.
(emphasis mine)
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(14.01.b) cogito ergo sum confusus