I've heard it from Owners, Presidents, CEOs, General Managers, and at every other level in the hierarchy of business organizations. They were, all of them, absolutely correct. They were too busy. Being busy means that you are doing things that consume time. Being productive means you are doing things that move you toward a goal, like increasing profits.
Productivity is a dynamic phenomenon.
Just when you finish improving something, it's time to observe, measure, and improve it again. Let's talk about observations. First, select a task or process or system to be observed. Let's say it's a task that some of your people are doing. Look at that task from every angle.