When people are angry, they tend to lash out on anyone who is near them, whether they are relevant to the problem or not, and say things they don't mean. To address those two problems, when you're at your most angry, take a few minutes for yourself and ask yourself why you're so upset and what you can do to address it calmly. Though in the heat of the moment, verbally and physically expressing your emotions gives you release, it could also hurt the people around you as well and ruin relationships. You know yourself better than anyone else, so when you know that you're about to have an emotional storm, you must discipline yourself to stay calm. The best outlet is to delve into whatever makes you happy, like a hobby of yours, going to the gym, playing sports, playing instruments, etc. Also try to stay away from things or people that often make you angry or impatient.