The above is good advice unless you have something wrong with your taste buds. Many think self-assessment is easy but it is actually very difficult and requires incredible amounts of honesty.
You can see the dysfunctional person trying to engage in an argument from a distance and you know the outcome already because they are asking for a beating. When you cannot taste your words before spitting them out, you will ruin yourself and will get caught in the trap of your own words.
Fire Lord Ozai:GET OUT! Get out of my sight right now if you know what’s good for you!
Zuko: That’s another thing. I’m not taking orders from you any more.
Ozai: You will obey me, or this defiant breath will be your last! (steps towards Zuko)
Zuko: (draws swords) Think again! I am going to speak my mind… and you are going to listen. — Avatar: The Last Airbender