נֹצֵ֣ר פִּ֭יו שֹׁמֵ֣ר נַפְשׁ֑וֹ פֹּשֵׂ֥ק שְׂ֝פָתָ֗יו מְחִתָּה־לֽוֹ׃
He that guardeth his mouth keepeth his life; But for him that openeth wide his lips there shall be ruin.
Read kabbalistic (mystical) interpretation of Proverbs 13:3: and classical mystical sources.