During the day make frequent offerings of yourself to God, as St. Teresa of Avila was wont to do, by saying: "Here I am, O Lord; do with me what You please. Tell me what You wish me to do for You, and I will do it all." Repeat acts of love for God as often as you can. St. Teresa used to say that acts of love are like wood maintaining the fire of divine love kindled in our hearts.
