Half the troubles of this life can be traced to saying yes too quickly and not saying no soon enough.

Two separate failures, both about timing. The quick yes is given to avoid an awkward moment and paid for over weeks; the delayed no lets someone build plans on an answer you had already decided against, which turns a small refusal into a real betrayal. Neither comes from bad intentions. Both come from wanting the immediate conversation to be comfortable.

The repair is a phrase and a habit. Let me check and come back to you buys the time to answer honestly. And when you know the answer is no, the kindest version is the earliest one, delivered while it still costs the other person nothing.