How to turn off emotions? It is a hard question though it looks and sounds simple from the outside. However, there are possible, but not easy, ways of turning off and getting over emotions.
First, you need to understand that you are human and expressing legitimate emotions is neither folly nor weakness.
Second, you have to understand that people can be one of the greatest causes of emotional damage. You may not have control over what people choose to do or not to do to you. But you can still help to at least reverse your emotional reactions, no matter how hard it might be.
Third, one of the best, but hardest, ways of dealing with emotions arising from abuse and betrayal is forgiveness. There is no way that someone can convince you that you will just forget and “hide off” those emotions without deciding to deal with the cause through forgiveness. This is to your benefit because you are the one who is hurt, but the fact that your husband took off with your friend seems to benefit them, at least for now. This means that when you forgive the two, you are actually setting free an innocent prisoner, and that innocent prisoner is you. This is the only way that will guarantee permanent healing because trying to suppress the pain or hold a grudge will only hurt you more.