The group that keeps its small promises makes the next request easier to believe.

Trust is built out of unremarkable follow-through. Sending the notes when you said, starting at the stated time, returning the money the same week: none of it is impressive alone, and all of it gathers into a reputation people lean on without thinking. When a larger request comes, it is carried by that small history. Broken minor promises quietly tax every future one.

Pick one small commitment your group keeps missing and repair that one first. Reliability is cheaper to build in ordinary weeks than to claim in an important one.