A timetable becomes trustworthy through the small minutes it gets right repeatedly.

Trust is not built by declarations but by a long run of small accuracies nobody remarks on. A bus that came when it said it would is not an event, and that is the point: reliability buys people the freedom to stop checking. Every minute it gets right adds to something invisible, and a few missed ones spend it faster than they were earned.

Apply that to whatever people rely on you for, which is usually smaller than you think. Be on time, answer when you said, do the boring part. Then notice which reliabilities you lean on daily and have never thanked anyone for.