Principles are ways of successfully dealing with reality to get what you want out of life.
Ray Dalio, one of the world’s most successful investors and entrepreneurs, cites principles as his key to success.
Sometimes you need to stand by and let someone make a mistake (provided it's not too serious) so they can learn. It's a bad sign if you are constantly telling people what they should do; micromanagement typically reflects inability on the part of the person being managed. It's also not a good thing for you as a manager. Instead of micromanaging, you should be training and testing. Give people your thoughts on how they might approach their decisions, but don't dictate to them. The most useful thing you can do is to get in sync with them, exploring how they are doing things and why.