My whole heart...

I seem to notice a common theme in my bible studies lately and in my quiet time with the Lord. Everything is about "the heart." He wants me to give my whole heart to the things that I do...God wants my whole heart, my children deserve a whole hearted mom, my husband needs my whole heart as well. He's been talking to me a lot about the heart. I know He is working with me and I want to give my "whole heart." Yet, I know that in order to do that I need to let God fill me each and every day so that I am fulfilled and I have it in me to give.