" You have to get into the habit of forcing yourself to analyze, at the time you accept a task, the costs and benefits of doing a less-than-perfect job. You must ask yourself some questions: How useful would a perfect job be here? How much more useful would it be than a merely adequate job? Or even a half-assed job? And you’ve got to ask yourself: What is the probability that I will really do anything like a remotely perfect job on this? And: What difference will it make to me, and to others, whether I do or not? "

― , The Art of Procrastination: A Guide to Effective Dawdling, Lollygagging and Postponing