Refuse meetings that swallow up your time with little benefit. Unproductive talk and time tend to fill the space at protracted meetings.
Cut the meetings you have in half. Cut the time of the meetings that remain in half. Then cut the number of attendees in half.
Show up only if you’re required—not just to be seen, and be prepared with your contribution.
Anecdote: When Andy Grove was CEO at Intel, every new employee, from a production worker to an executive, was required to take the company’s course on effective meetings, often taught by the acclaimed CEO himself. Grove believed good meetings were of such consequence to Intel that it was worth his time to train all employees.