Learning to really selflessly love those we live with can be a challenge? Why? Those people tend to bring out our fleshly tendencies the most. They are with us when our guard is down and they rub those spots that cause a reaction out of step with walking in the Spirit.
Teaching to really love your "neighbor" (the people you live with), will help you be a better wife/mom or husband/dad. And more importantly learning to be patient, joyful, loving, peaceful, and kind will help as you grow in Christ-likeness.