My immaturity is showing

Frustrated
At another, for his choices
For two. At their choices
Frustration. Inconsiderate people.
They are perhaps unaware of their action's consequences?

It's not them I should be worrying about.
This is a ME problem.
The frustration is inside of me
Their actions helped create it, but who am I to tell others how to operate?

Don't stop. Don't give in.
Do what you're doing. Don't feel entitled.
Get back to work.