Knowledge workers usually have to play 2 roles at the same time - the boss and the worker: They have to choose what their work is (boss-mode) and they have to do the actual work (work-mode), for example.
This situation has the potential to create conflict and lead to indecision about which role should have their attention at different times of the day.
Your attention is a limited resource and you have to be careful where you are spending it.
If you choose to give away 80 percent of your attention to meetings, you will have 20 percent of your attention just for dealing with a few emails feeling overwhelmed.
... based on your attention level.
Save difficult and important task for when your attention level is proactive, leave the intense but easier stuff for those active attention times, and try to save up the easy or dull stuff for when you're capable of little else.