Why do I keep saying yes at work, then resent it?

You said yes in the meeting. You said yes in the hallway. You said yes to the message that landed at nine at night. None of it was false in the moment — you meant it. But now the work is stacked past midnight, and what you feel toward the people who asked is not gratitude for their trust. It is resentment. That resentment is information. It tells you that you agreed to something your time could not actually support. The fault is not theirs for asking — asking costs them nothing. The fault is yours for answering before you checked what you had left to give. Your team cannot read your calendar or your exhaustion. They can only read your words. If your words say yes when your capacity says no, they will keep asking. And you will keep calling it their fault, when it was your silence that taught them to ask.