"You learn to speak by speaking, to study by studying, to run by running, to work by working, and just so, you learn to love by loving. All those who think to learn in any other way deceive themselves.”
-St. Francis de Sales
Love is not a feeling but a choice. Often, the choice requires a great interior struggle, when the warm, fuzzy, loving feeling is not there. Think of that one person who you find most difficult to love today and make an act of the will to love them.