Something that you hate?

People who know they are making mistakes, even while making said mistake, repeat said mistakes, and refuse to better themselves and prevent themselves from making those mistakes again. You never have to change who you are, but there is always room to improve. I'm sorry. But if you call yourself names and insults because you know you can be said name or insult (we'll use the PG "idiot" as an example) and you make no effort to stop the behavior that makes you so, then you are a walking-self-fulfilling-prophecy, and the only thing keeping yourself from bettering yourself is you.