A healthy marriage is built upon the Gospel. A major problem the Church has is that she has tried fleshly solutions to marital difficulties, instead of the Scriptural means - Repentance and Faith in Christ Jesus. This is the only True solution.
No matter how spiritual many methods may seem, deviating from the Word of God has dire consequences. The reality of the total depravity of man is that we are helpless, and therefore hopeless and hapless.
The only true Hope we have is faith in the Lord Jesus Christ, and His work of redemption in us.
Is your marriage on the rocks? If it is, look to the ROCK,, and build the relationship on that ROCK - Christ Jesus!