Prayer - The Shema

In the Shema we proclaim our belief in the unity of G-d, and express our love for G-d "with all your heart, with all your soul, and with all your might." You, as an individual, cannot truly love G-d when your animal soul loves something else.
But as you go through the processes of prayer, your animal soul begins to recognize that maybe its first love should be G-d. And maybe it shouldn't stand in the way of the G-dly soul. And then you can love G-d b'chol l'vovcha, "with all your heart(s)."
The Talmud comments that the expression l'vovcha denotes a double heart. And the Talmud remarks that this is because your heart is split. One set of emotions, one heart, is guided and inspired by your G-dly soul, another set is guided by your animal soul. It's not enough that your G-dly soul loves G-d; your animal soul has to feel this love of G-d, too.
When you say the Shema, ideally, this is what you should be expressing - not only the love of G-d through your G-dly soul, but also your basic animal nature's love of G-d.