Patience is a virtue.

This dialogue shows a couple of roommates arguing about the amount of time it is taking the technician to fix the air conditioning.

John: It’s so hot in here! I feel like I’m dying.

Amanda: Yeah, it is certainly sweltering.

John: What is taking that repairman this long? I’m going to go yell at him to hurry up!

Amanda: Don’t do that! That won’t make him go any faster. In fact, he might take longer if you’re a jerk. Remember, patience is a virtue. Nothing will get done faster if you are impatient. The only thing that will happen is that you will feel angrier.

John: Okay, I’ll try my best.

Info Derived from:
https://writingexplained.org/idiom-dictionary/patience-is-a-virtue