To be free you must be able to have discipline over your emotions and avoid allowing others and situations to control you.
No one can make you mad. They can provoke you all day long, but it is up to you if you get mad. If you get mad when beings provoked then you are giving the provoker power and control over you. How you respond to this emotion is up to you. You have more control over your response then you may think.
Live with as little personal possessions as possible and learn the meaning of freedom