Preacher: Start your prep early
On a Monday morning I'm always exhausted. Sundays take it out of me.
That means I often use the lion's share of Mondays to get admin done, or other things that take time but don't require the most intensive thought.
But over the years I've learnt the value of starting my preaching preparation early in the week.
(Before going further, I know: Sermon series preparation can usefully be done 6-9 months ahead, and you shouldn't first think about the passages you preach in the week before you preach them. Take that as read).