Help me Love, Lord

I'm facing one of those days when its really difficult to love. When love is not returned in the measure its given and casual replies which border on indifference are tossed back at me, I can't help but get disappointed. My heart is overflowing but my excitement is doused because love is unrequited. But then anyone can love someone who's perfectly nice and lovely to them. The challenge is loving even when you are met with complete indifference. Help me to love like you Lord. I'm too imperfect.