Okay, so as a cab driver I have a lot of opportunities to get frustrated with how selfish and myopic people are. But you know what happens when I do that? I make myself miserable.
I, personally, find that my mental state is much, much better the more I’m willing to accept people not doing things ‘the right way’. Yes, I could get annoyed for the hypothetical people who might encounter an obstacle to their mobility here (who have not and may not ever arrive), but what will that actually do for me or for anyone else?
Unless I’m actually moving the obstacle my disapproval is completely useless. It may even cause me to do something stupid and inconsiderate myself as I become distracted by my annoyance.
But if I just let it go, smile, and move on, the utter insignificance of the action can just fade into the background and not make itself part of my focus on how to reflect on humanity or my day.