>>935919408 (OP)The goal should be control first, then letting go of the reasons you feel angry later. There are perfectly valid reasons to be angry, but you shouldn't allow anger to control you either. Take action if you need to, but don't allow your emotions to steer you into doing foolish things.
>how?Face your emotions, and come to recognize their source. Once you realize what is causing the agitation, make peace with it. Part with it, rationalize it and try to make peace with it. Realize it should not effect you, and let go of its influence.
Shift your mind and focus to positive things, and part with the things causing you frustration.
>If I live among the things which make me angry?Try to move away from them, or resolve and make peace with them. Most importantly, create separation from whatever may be causing this.
If as I am reading in another post, your 'care' for things is the source cause of your frustration, then realize you cannot change these things you care about. Rationalize the fact you are putting too much time into thinking about 'the problem', and move on from it.
Set your mind to better things.
Whenever you catch yourself thinking about "the problems' immediately start thinking about or doing something else. Put on music if you need to. that can help, but it shouldn't become a crutch either.
(You) should be able to train yourself to shift your mind to other things, and keep it there. Focused, calm, and joyful if you like.
Muting emotion entirely takes even more training, but remember, it can be healthy to express anger and frustration sometimes too. Only make sure your emotions do not begin to control you, or your actions.
Try to tame your emotions with logic and reason. realize you don't have to be 'Mad', even when faced with evil or regretful things.
Simply accept them, and do your best to deal with them from a calm state of mind.
Redundancies aside, I hope this helps. If not, I tried.