If you are a believer in Christ I cannot promise that your marriage will be saved, but based on the Word of God I can encourage you with many things.
He will never leave you or forsake you. (Deuteronomy 31:8)
Love never fails. (1 Corinthians 13:8)
God hates divorce. (Malachi 2:16)
God has made the two one flesh. (Genesis 2:24)
In all things God works for the good of those who love Him. (Romans 8:28)
The Lord is Your shepherd. (Psalm 23:1)
I believe it was Beth Moore who said that at times when something is really bothering her she just starts repeating the name of Jesus aloud and in a little bit that heaviness lifts. I have experienced this myself.
Kenneth Copeland said repeating the name of Jesus is like throwing the whole Bible in Satan’s face.
Anne Graham Lotz, one of Billy Graham’s daughters, once did a sermon on “Just give me Jesus.”
If you are separated and discouraged my encouragement to you is to call on Jesus, seek Him with your whole heart, mind, and strength, whether that is through speaking His name, speaking His Word aloud, listening to worship that lifts Him up, or some other way that has been special to you in the past to connect with Him. The bottom line is to focus on and call out to Him.