This is one of my favorite bible verses for marriage restoration:
"Do not let any unwholesome talk come out of your mouths, but only what is helpful for building others up according to their needs, that it may benefit those who listen." Ephesians 4:29 (NIV)
I encourage you and your other half memorize this bible verse and bind it to your heart -- this Bible verse alone could help save your marriage. This verse doesn't mean to "not curse" or "tell dirty jokes" . . . it goes further than that. It says, don't say anything AT ALL unless it encourages or builds up your partner. Wow, imagine how peaceful your relationship would be if you and your partner only spoke encouraging and loving words towards each other.
Remember it takes about 2 weeks to develop a habit -- so start practicing it today!