A crowded calendar is a problem that comes from having choices. Somewhere, someone would trade for your stress.

Being overbooked is a real strain, and it is also a particular kind of strain. It comes from having options, invitations, work available and people who want your time, which is not the same situation as having none of those. Both can exhaust you; only one of them is the exhaustion of scarcity.

That is not a reason to dismiss your own stress or to push through it. Cut something out of the week, genuinely. And while you are cutting, notice that the reason there is anything to cut is that you were asked.