If you’re a radio personality, you should always bring more material into the studio than you’ll be able to use during your show.
If your last break of the show ends and you cross off the very last piece of prepared material, you cut it too close. You weren’t prepared; you were lucky.
Crossing off your last piece of prepared material and congratulating yourself on how well prepared you were is like leaving on a two-week automobile journey. Just as you pull into your driveway at the end of your trip, your car completely runs out of gas. And you think, “I sure planned that perfectly!”
Well, no. You were lucky.
Always have a little extra gas in the tank, just to be sure.
As frustrating as it can be to leave the studio with great stuff you prepared but didn’t have time for, running out of time before you run out of material is vastly preferable to running out of material before you run out of time.