Read a leaving card sometime, the sort a team signs when someone moves on. Almost nobody writes about output. They write about what the person was like to be near.
That's the level this operates at. Not what you feel today, which is weather, but what accumulates into a description other people would recognise without being told who it was about.
Feelings are visitors; a disposition is a resident. And a disposition gets built out of a thousand unremarkable decisions about tone — how you answered the phone this morning, whether you let the small irritation into your voice.