Have you ever had someone tell you that something apparently minor you said or did had a significant impact on them?
E.g. my best friend was single for a while but really wanted to start a family. She was complaining to me about how all the men she met were awful and I said, 'Well, I think you've met some nice blokes but you always found something wrong with them.' I then listed a few of the men she'd dated where she'd ended things for minor reasons. Fast forward a few years and she has kids with a lovely man and told me my comment had really made her think and re-evaluate her approach to dating/relationships.
And I don't even remember saying it!