Premanand Maharaj Ji
What is the simple way to live a happy married life?
Love your spouse, chant the Name
For a householder this is not a big thing: once married, love your spouse, treat your children as a form of Bhagwan, and chant the Name. Chant the Name and live with love.
When you are married, love your wife. Love your husband. See your children as a form of Bhagwan, chant the Name, and be free.