The tongue weighs practically nothing,
but so few people can hold it.
It has less to do with self-control and more to do with what we stuff inside of us that eventually comes out.
So if you're cranky, angry or come across that way, perhaps it's time for some fresh ingredients... otherwise you're going to keep serving up the same old meal that makes everyone else want to spit it out.
"My dear brothers, take note of this: Everyone should be quick to listen, slow to speak and slow to become angry, for man’s anger does not bring about the righteous life that God desires. Therefore, get rid of all moral filth and the evil that is so prevalent and humbly accept the word planted in you, which can save you." (James 1:19-21)