Find ways to handle your stress other than exhibiting irresponsible behavior behind the steering wheel. Create a relaxing environment in your car. You might want to try singing happy songs to yourself. Do not take traffic problems personally. Pause and marvel at how well most people obey the traffic rules.
Most people are very courteous in their driving behaviors.
If someone is observed driving aggressively, avoid eye contact and never make obscene gestures to show your frustration. Use your horn very sparingly if at all and obey all traffic laws. Slow down and get away from someone acting in an irresponsible manner. Note a description of the car and a license plate number and report the incidence to the police. Take a big breath and then go on with your business of driving.