My point is that "envious", "self-absorbed", "arrogant", "hater", and "full of shit" are not objective qualities that a person can intrinsically possess. Rather, they are value judgments that one person labels another with. "Nostrademons is an arrogant twat" is not an objective statement; it is a subjective one, with an implicit "I think that..." prefixing it. "Pekk thinks that nostrademons is an arrogant twat" is an objective statement (hopefully false in this case, it's provided for example only).

For any given person's actions, there will be a cloud of value judgments around that action. What's arrogant and obnoxious to one person may seem self-confident and assertive to another. And in general, people are happier when they don't hang around people they find obnoxious. So there's some degree of self-selection going on. If taken too far, you may end up in the situation where nobody wants to hang around with you, and that's probably a good reason to tone it down a little with the bragging. Similarly, if you find that the only people who want to hang around you are folks who you don't want to hang around, you may want to either change your actions to attract folks you actually want to be with, or change your definition of who you want to be around. But there's no intrinsic good or bad level of self-promotion, only the level at which you personally are uncomfortable.