(Proverbs 17:27 KJV) He that hath knowledge spareth his words: and a man of understanding is of an excellent spirit.
If we had a modern bit of jargon for this attitude it might be “laid back”. However you want to translate the description here it comes back as someone who is not rattled by what is going on around him. Think of all the things that get us worried today: Political results, terrorism, environment, taxes, health, the list goes on. Some of the upsets are serious, many are just momentary. We are to be relaxed.
Some wag once came up with the statement, “If you can keep your head when other around you are losing theirs, you probably don’t understand the situation.” That could be totally correct, or you could just honestly trust in God.
So which is it? Are you uptight or at ease? Are you clueless or trusting? I know what I prefer to be. It is a matter of choice.