I think it's all relative. The answer is neither yes or no, or better yet, yes and no to both. I don't think people naturally fit into a category because we all have our own individual perception. I do think, though, that the higher you praise yourself, the higher the chance your words are speaking from a deeper insecurity. For example, people who say, "I'm a nice person." Who are they trying to convince and why? If they are truly nice, others will notice that for themselves.