Breathing Grace

In his book, Breathing Grace, Dr. Harry Kraus gives a great definition of grace:

Grace is a positive characteristic that determines God's posture towards His children whereby He generously and freely loves, forgives, favors and exalts undeserving sinners into sonship.

He spends the book expanding on this idea using the medical idea of ABC. As a medical student he explains you learn the importance of A-airway, B-breathing, C-circulation in diagnosis; in the Christian life he compares this to A-acknowledging your weakness, B-believing God's word, and C-communication and uses these to help us understand our needs in learning to live moment by moment in grace.

He has a good thought of what faith is on pg. 55:

Faith is a conviction that the gospel is true and a way of thinking that stimulates action which places our lives in God's hands.

A conviction that the gospel is true is the recognition that we are not in control. We didn't earn it, work for it, or deserve it. So we rely on Christ. We lean on Him. And believing that the gospel is true brings grace into our lives.

Good things too ponder on and enjoy. He also uses some interesting examples of medical patients and situations he's been in to illustrate what he speaks of.