Get there ten minutes early and you get ten minutes nobody else has: to breathe, set up and look around.

Margin is not wasted time; it is the only unclaimed time in your day. Ten minutes before anything starts belongs to nobody, so you can use it to settle, set up, read the room, ask a question before everyone gets busy. Arrive on the dot and you begin already behind, reacting to something that started without you. The difference across the next hour is large.

Leave ten minutes earlier for one thing this week and do not spend the gap on your phone. Look at what needs doing, breathe, then start. Notice how different the beginning feels.