Ha, what a coincidence? I used to be the director of PMC. There are many complicated things in PMC, which is very frustrating. You will feel very tired after a day's work. Sometimes things are not finished, and you may still be worried, so you will feel more annoyed. It may also be that you are disorganized, do whatever you want, and feel that you have not finished anything after work, which may also be very annoying.
Exercise your ability to resist pressure in a targeted way. Have a nice day at work.