I try not to micro-manage, but I am upfront with my staff that I will nag. The difference - nagging is asking you about your progress or reminding you about the deadline without actually seeing the product (unless you offer to show it to me). Every time I ask you how it's coming is an opportunity for you to get clarification, tell me about some obstacle you've encountered, etc. So when you respond each time with something like "it's all under control", I'm going to take you at your word. But blow the deadline or provide a weak product and then say you had questions about what needed to be done, and you've given me permission to move beyond nagging and into micromanagement, starting with frequent status meetings where you have to show your progress.