Well, this has never happened to me but, I have been around people who constantly had to bring up every accomplishment in their lives - over and over and... It's okay to talk about yourself but, there is a fine line between being confident and just plain borish bragging. In most cases, I think the ones who talk the most are the least secure. Whatever the cause and depending on your tolerence, it can affect you as being anything from irritating to a bit pathetic.