Your peace should not depend on everyone behaving correctly.

Conditioning your calm on other people behaving well means handing your state to a group of people who did not agree to manage it. They will be inconsiderate, unreasonable, and careless at some rate no matter what you do, and if each instance takes your day, you will not have many good ones.

Practice with something minor, like someone driving badly or replying rudely. Notice the reaction and let it pass without a story attached. That small independence scales up to the larger things.