There are many techniques to cope and reduce stress. However, when stressed, individuals are unable to think clearly and these methods are often not apparent. A healthy, fit person handles stress better than someone who is tired and sick. Get plenty of rest and sleep. Work off your anger.
Anger management is a book by itself.
However, the pent-up energy resulting from anger is better used to handle a chore, such as cleaning up or weeding the garden. Later, after the initial anger, try to formulate your anger into words. Pinpointing the real feelings that led to the anger will help resolve not only the immediate difficulty, but other problems as well. Take time to relax and do something fun to get your mind off things. Many people drive themselves so hard that they allow themselves too little time for recreation - an essential for good physical and mental health.