Following are a number of back-translations as well as a sample translation for translators of Proverbs 12:25:

• Kupsabiny: “Anxiety makes a person to shy down/be depressed,
  but a good word makes that person happy.” (Source: Kupsabiny Back Translation)
• Newari: “If a person has no peace of mind
  his heart will be depressed,
  But tender words cheer the heart.” (Source: Newari Back Translation)
• Hiligaynon: “Worrying can-take-away the joy of a man; kind/good words can-make- him -happy.” (Source: Hiligaynon Back Translation)
• Kankanaey: “Worry, it is heavy to bear (lit. carry-on-the-shoulder), but the good/lovely word, it-causes-happiness.” (Source: Kankanaey Back Translation)
• English: “When people are anxious/worried, they become depressed/dejected,
  but when others speak kindly to them, it causes them to be cheerful again.” (Source: Translation for Translators)