“So, when we do something and realize that it’s no longer worth our time, we should decide to stop. Don’t hesitate to leave it unfinished. Just because you start doing something, it doesn’t mean that you must finish it. Save your time and get more value by doing something else.”
Too often because we have invested time and energy in one direction, it becomes very difficult to let go. Seth Godin makes the same point in his book “The Dip”, sometimes there is much more value in stopping what you are doing and investing your energy in a more productive undertaking. Give your self permission to sometimes leave projects unfinished.