Faithfulness - setting a deliberate course of action toward Christ-likeness, and not allowing our life to be based upon emotion, physical feeling or mood is the sign of a maturing believer.
Paul said, "When I was a child, I talked like a child, I thought like a child, I reasoned like a child. When I became a man, I put the ways of childhood behind me" (1 Cor. 13:11). Putting away childish actions, thoughts and conversations, and growing up into the fullness of Christ's image and likeness is the mark of maturity - of learning the ways of faithfulness to God.
Faithfulness is vitally important to every aspect of the believer's life: It impacts everything. Our testimony with our kids - remember, they see through unfaithful actions like Superman sees through a wall. Faithfulness weakens our testimony with the world - they too can spot 'reality' a mile away. And a lack of faithfulness limits God's ability to flow through us, use us, and reveal Himself through us.
What's the problem? Unfaithfulness is the exact opposite of who God is - it denies His transformative work within us, and makes it impossible for His likeness to be formed and revealed in us. In other words, we cannot become like Him, and have His likeness formed within us, until we put away the childish ways of humanity, and allow Him to shape and mold us into "who He is."
Considering the high value of faithfulness, and it's impact on our lives, isn't it time we stopped doing what pleases us, and at all costs, did what mature adult believers do to grow in Him? When you look at the results of a life lived in faithfulness, its not only the best decision, its the ONLY decision a believer should make. After all, why go through most of the motions of being a believer, when with a little more effort, you can become the man or woman of God you always desired to be? The time is now ...