The Bible is our spec - it is God's definitive set of requirements for our life and we must daily read it to understand how we must live. The world presents us with another, ever shifting set of requirements. Reject the fluctuating tasks of the world that tell you how to think, act, and feel. Reject them as you would a project that had no set requirements. Build to the spec - it's the only way to build something that will last.
Everyone then who hears these words of mine and does them will be like a wise man who built his house on the rock. And the rain fell, and the floods came, and the winds blew and beat on that house, but it did not fall, because it had been founded on the rock.
And everyone who hears these words of mine and does not do them will be like a foolish man who built his house on the sand. And the rain fell, and the floods came, and the winds blew and beat against that house, and it fell, and great was the fall of it. (Matthew 7:24-27)