What is the difference between a good manager and a bad manager?
Because a previous blog of mine asked about good and bad managers, the question naturally came up about what's the difference.
There are, of course, many ways to be a bad manager. Or a good manager. But if I’d been asked for a single difference (and you didn’t use the plural) I’d say that the First Law of Bad Management is this:
If what you’re doing isn’t working, do more of it, faster and louder.

For more on good vs. bad management, take a look at 
Do You Want To Be A (Better) Manager?