Be slow to say yes and fast to deliver. The reverse makes you unreliable.

Agreeing quickly feels generous and costs nothing at the time, which is precisely the trap. A yes is cheap in the moment and expensive on the day, and a stack of easy agreements becomes a week you cannot possibly cover. Then the delivering slips, and people remember the slipping rather than the enthusiasm behind it.

Buy yourself a pause before agreeing to anything. Say you will check and come back, then look honestly at the week before you answer. Careful about the promise and quick about the work is the combination that builds trust.