Jesus said "love one another" and spoke of love being the greatest of all gifts. However, how do we love the unlovable? Those that are just difficult to get along with, that are always complaining, full of bitterness and very hard to be around. Most definitely a challenge at times, and especially if they are in your household. To be quite honest, other than saying love them with the love of Christ, I do not feel there is a true answer.
Yes anyone can tell you the 1-10 ways to love the unlovable, however telling someone and walking in those shoes are two different things. Loving the unlovable is a challenge that takes great wisdom, great patience, great understanding and extra measures of God's love flowing through you.