Being led by the Spirit of God is key. But in order to be led you must make your own spirit, or heart, your top priority. Learning to develop a hearing ear comes with time. Avail yourself to the study of the word. Make the law of love, the law of your heart 1 Cor 13. Then when the Lord would lead you internally, you will be able to pick up on it. Remember, we grow into all things for we start off as babies. Then we put forth effort to grow into mature sons and daughters of God.
Rom. 8:14
For as many as are led by the Spirit of God, they are the sons of God.