First your anger button gets pushed. Then your thinking gets distorted. You might assume worst case scenario, blow things out of proportion, blame others, or misinterpret the events. Finally, your feelings take control over your behaviour and you react.
A good thing to do is process your stages of anger with a trusted person or a counsellor. Once you know how your anger builds you will be able to apply different strategies to stay grounded and not let your anger get out of control.