Yes, anger can control you when you are not able to control it.
There are few things that can impact emotional health than not being able to control your anger. Anger management affects every area of your life and can, in fact, shorten your life if you do not get it under control. People who have uncontrollable anger often act out in very unhealthy ways and sometimes even in up serving time in jail because they overreacted to a situation.
So, how can you control anger? Well, since anger is also an emotion, you can not demolish it out of yourself but you can avoid anger to result unnecessary things. To control anger, one thing that you can do is to search for ideas that can cool down this emotion. The Internet provides lots of effective strategies for it. You can choose which you think effective for you. Else, you can also seek advice from psychologists.