Sources of Anger - Frustration Bricks. Walls of Anger.

Frustration occurs whenever an expectation is not met. This is the equivalent of a single brick.

Repeated Frustration becomes Anger. This is the culmination of frustration into a perceived wall.

Anger is the mechanism your brain uses to force yourself into a state that allows you to deal with a situation that you were unable to deal with previously.
It's a survival mechanism.
Nothing more than a hammer meant to break that wall.

Your brain has perceived a virtual wall, and your brain is using desperate tools to get over it.
The correct course of action is to calm down, examine the wall and identify the following

• Can i walk around, or otherwise ignore this wall?
• Is this wall real?
• What is the root cause?
• Why is this wall a problem?
• Are others placing frustration bricks, or am i placing them myself?
• Am i building this wall for a reason?
• If i knock down this wall, will it have other consequences?
• Not all walls are bad. They may be inconvenient, and frustrating, but they may be necessary. 
• Don't go knocking down walls if they're holding up your roof.
• This wall may be preventing other walls from forming
• 
  

Situations

• XMAS 2017. Supposed to be by my mother for 2pm for our family get-together.She knows we have to leave early to go to church my 6pm. I got the kids ready and were waiting by 1pm. It is now 3pm. All other family is already there and have called to find out where we are. 
• This is not the first time this has happened. In fact, this has happened EVERY SINGLE TIME we have to do something. She is always at least 1 hour late. If i push or try to get her to speed up, it ends up in a fight.
• This makes me angry.