As an anecdote. I once received something like this (on Twitter of all places). It was a "you probably don't remember me but..." for someone I'd passed on a decade ago. It really touched me and made me sit down and reflect on my career. The person had gone on to have a successful career being creative. Which honestly, is all we can ever ask.

I remembered the person, but not anything about what I'd said that day. I assume it was just what I normally say. Having that last realization made me feel even better.

The easiest, most rewarding thing you can do daily in your life is appreciate the people around you. We all need that feedback.