"Therefore everyone who hears these words of mine and puts them into practice is like a wise man who built his house on the rock. The rain came down, the streams rose, and the winds blew and beat against that house; yet it did not fall, because it had its foundation on the rock." -- Matthew 7:24-25
People spend millions of dollars every year attending instructional conferences, workshops and reading numerous handbooks. Their purpose is improvement of skills or life in general. Sadly, there are many whose skills or lives never change. The reason is simple: they fail to put their learning into practice.
Many Christians suffer from the same experience. They study the Scriptures and read any number of books on spiritual growth. They attend conferences and listen to speakers galore but see little to no change in their spiritual lives. The endless cycle only discourages the average believer as they crumble in the midst of every storm that comes their way. The missing element is always the same: they fail to put their learning into practice.
If you hope to have a strong life, built on the rock, practice is required. You can't just know it my friend, you need to do it. We learn how to pray by praying, we learn how to serve by serving, we learn how to trust by trusting, we learn how to love by loving and we learn how to forgive by forgiving. As always, we can only learn by doing. Some years ago NIKE made the point well in their commercial: "Just Do It".