Get a feedback loop and listen to it. Your feedback loop can be this dorky spreadsheet thing I did, or it can just be one great man who tells you what you need to hear. The hard part is the listening to it. Anybody can get chewed out. It’s the rare person who says, oh my god, you were right. As opposed to, no wait, the real reason is. . . We’ve all heard that. When people give you feedback, cherish it and use it.
In some dispositions there is such an envious kind of pride that they cannot endure that any but themselves should be set forth as excellent; so that when they hear one justly praised they will either openly detract from his virtues; or, if those virtues be, like a clear and shining light, eminent and distinguished, so that he cannot be safely traduced by the tongue, they will then raise a suspicion against him by a mysterious silence, as if there were something remaining to be told which overclouded even his brightest glory.