Jon Bloom has written a book of 30 or so short meditations for Christians which addresses the human heart. The message isn't that the heart doesn't matter, on the contrary, it matters very much. The message is: our hearts were never made to be followed, but to be led - to be caught up in something greater than us, in the God without which our hearts will never be satisfied.
If you have a Kindle or similar, you can read it for free (file below) - for other formats, click here.
Lewis is the Pastor at SPFC and lives in Stoke Poges with his wife, Kimberley, and their son, Samuel.