This objective of getting what we want from other people-or getting them to do what we want them to do-threatens the autonomy of people, their right to choose what they want to do. And whenever people feel that they're not free to choose what they want to do, they are likely to resist, even if they see the purpose in what we are asking and would ordinarily want to do it.
Anger tells us we've disconnected from life. The purpose in anger is to use it to come back to life.
Also, think about your intentionality - are you getting lost in the method? or coming from the intentionality, the purpose? You don't want to do the mechanics without the consciousness.