Keep a log of your day. Find how much time you spend on different types of activities. The higher proportion of time you spend doing things like improving quality of your work, learning new skills, teaching your people, perfecting designs, preventing errors or defects or recalls, avoiding need for reminders and multiple communications, preparing for a meeting, or planning for future, the better leader you are. Let us call these Type A activities. Log your activities over a week or so.
Activities like waiting, correcting errors, redoing, reminding etc. waste your time, even if they are necessary to do in the short run. Let us call these Type B activities. These activities arise because you and people around you may not be spending enough time on the Type A activities.
Improving proportion of Type A activities means that you are setting and implementing your agenda. It means that you are leading better.