Imagine that everything you do has a moment of perfection and fruition. Your goal is to end your project there, at such a peak. Succumb to tiredness, boredom, or impatience for the end and you fall short of that peak. Greed and delusions of grandeur will make you go too far. To conclude at this moment of perfection, you must have the clearest possible sense of your goals, of what you really want. You must also command an in-depth knowledge of your resources—how far can you practicably go? This kind of awareness will give you an intuitive feel for the culminating point.