The less people speak of their greatness the more we think of it.

Announcing your own quality reduces it in the listener, because the announcement itself is evidence that you need the credit. Silence works the opposite way, leaving other people to reach the conclusion themselves, and a conclusion someone reaches on their own is one they defend. This is not a trick to be performed. Anyone doing modesty in order to be thought modest is heard doing it, usually within a sentence or two.

In the next week, let one thing you did go unmentioned. If it mattered, it will be noticed without your help, and if nobody notices, you find out something useful about how much you needed them to.