Service changes character when it becomes part of how you see people.

Doing things for people occasionally is a set of actions. Doing it long enough changes how you look at strangers by default: you start noticing who is struggling, who was skipped, what would help. At that point it has stopped being a set of activities and become an orientation.

If you want that shift, regularity matters more than scale. Something small and repeated will remake your attention faster than an annual effort. The change in what you see is the real return, and it arrives without being aimed at.