I've got a few that definitely had an impact on how I act, or perceive a situation.

"Why did you do that?"

"I don't know"

"Then if you don't know why you're doing something, don't do it."

I've heard this convo when I was a teenager, and I believe that it nudged me into having a bit more self-reflection and thoughtfulness than I would have otherwise.

"When people say something to you, most of the time it means either 'I need help' or 'I love you'"

And, closely related: "Don't forget that the person in front of you might just have a bad day".

Those have been immensely useful when dealing with common annoyance from family and strangers alike. It doesn't mean that you have to accept everything, but it certainly help in avoiding getting angry as the default reaction.