The fact that the anger comes with such force is itself enough to show that it is not in you that it is, but that it comes from outside. It is a rush of force from the universal Nature that tries to take possession of the individual being and make that being act according to the will of this outside force and not according to the will of the soul within. I think you have always had an idea that to give expression to an impulse or a movement is the best way or even the only way to get rid of it. But that is a mistaken idea.
If you give expression to anger, you prolong or confirm the habit of the recurrence of anger; you do not diminish or get rid of the habit. The very first step towards weakening the power of anger in nature and afterwards getting rid of it altogether, is to refuse all expression to it in act or speech. Afterward one can go on with more likelihood of success to throw it out from the thought and feeling also. And so with all other wrong movements.
All these movements come from outside, from the universal lower nature, or are suggested or thrown upon you by adverse forces — adverse to your spiritual progress. Your method of taking them as your own is again a wrong method; for by doing that you increase their power to recur and take hold of you. If you take them as your own, that gives them a kind of right to be there. If you feel them as not your own, then they have no right, and the will can develop more power to send them away.
What you must always have and feel as yours, is this will, the power to refuse assent, to refuse admission to a wrong movement. Or if it comes in, the power to send it away, without expressing it. If you find it difficult to reject in the sense of throwing away, what you have to do is to refuse assent. For instance, as regards voices or suggestions, not to listen to them, not to believe what they want you to believe, not to do what they want or push you to do.