This is my choice

Today I got my relief slip at 1.15pm, and the exam supposed to start at 1.20 pm. At that moment, I felt like"What The....". I am so tempted to complain. But a small still voice whisper in my heart, you already know this system is a mess when you chose to accept this job, so what do you complaint about. 

I am ya, what do I want to complain, this is my choice, not people force me to but I chose this job and I did know that the system is a mess, so what do I complain....

Because of this thought, I don't complain and I just go grab the exam sheet and enter the class. Things go crazy, there is a lot of problems with the exam papers but somehow I have the peace to calm down and solve it. Until everything changed upside down when I entered IL and get really angry with them. Scolded, lock the door and even flip the table around. Cried when I drove to prayer meeting just now. I am so disappointed at myself sometime for not able to manage my emotions. God, pls grant me grace to be able to master my emotions.