The person who depends on your best effort needs you to leave enough capacity to give it.

Committing to something is only half of what you owe it. If your week is filled to the edges, the promise still stands but the capacity behind it has been spent elsewhere, and what arrives is a tired version of what you meant to give. The people counting on you cannot see your calendar; they see only what turns up.

Look at what genuinely matters this week and protect the hours before it, not only the hours of it. Turn down something adjacent, even something appealing. Arriving with a little left in reserve is part of the commitment rather than a luxury on top of it.