According to Brian Tracy
There is never enough time to do everything you have to do. You are literally swamped with work and personal responsibilities, projects, stacks of magazines to read, and piles of books you intend to get to one of these days—as soon as you get caught up.
But the fact is that you are never going to get caught up. You will never get on top of your tasks. You will never get far enough ahead to be able to get to all those books, magazines, and leisure time activities that you dream of.
And forget about solving your time management problems by becoming more productive. No matter how many personal productivity techniques you master, there will always be more to do than you can ever accomplish in the time you have available to you, no matter how much it is.
You can get control of your time and your life only by changing the way you think, work, and deal with the never-ending river of responsibilities that flows over you each day. You can get control of your tasks and activities only to the degree that you stop doing some things and start spending more time on the few activities that can really make a difference in your life.