"Procrastination is the thief of time" -- I never knew Charles Dickens said that, though it's one of my favorite sayings. He went on to add something I hadn't heard until yesterday: "Collar him!"
Excellent advice that he took himself: he never missed a deadline (even though he had weekly ones for many years) and once even climbed back into a crashed railroad carriage that was teetering on a bridge to get his due-at-the-printers-that-day ms.
The train fell into the river minutes later -- but he got his chapter in on time.