Do you use time management practices to be become more productive Leaders?

I love this video as it assumes that the "big rock" tasks are static and do not grow in scope and that I can not delegate some of my tasks. However it does explain why I feel like I'm not getting much done - It looks like I spent all my time on the "sand" tasks. I still like Dr. Covey -

https://www.youtube.com/watch?v=fmV0gXpXwDU

I like this post, sir. It's a topic near and dear to my heart, and it has been for many years. It seems to me that Kathryn McKinnon is a little too focused on the day. Stephen Covey (in "The 7 Habits of Highly Effective People") recommends planning a week at a time, and then periodically looking even further out to set goals, etc. I like Covey's quadrant approach to time management. We have to beat back the tyranny of the urgent!