"My son, keep my words and store up my commands within you" (Proverbs 7:1).
"In one ear and out the other" is a saying that I had heard much when growing up...and mostly for good reason. It's a saying that holds much truth when it comes to hearing and receiving wise counsel. Solomon writes here for his son to keep, meaning to guard or protect, the words he speaks. These aren't just any words, but words that have been purposed for the well-being of his son.
And, the son is to "store them up" - to maintain, to add to, to keep protected in a secret and safe place, to preserve them. He should be able to recall and benefit from any one of them at any given time. So it is true with the Living Word of God.
Taking time to really spend time in the Bible, the Word of God, is something that I find great strength, encouragement, and challenge in. What it says is life to you...if you'll just receive it, meditate on it, and apply it. It will transform you, correct you, and direct you. We must protect this Word, guard it and hide it in our hearts, recalling all of the many morsels of truth at a moment's notice. The more you know the Word, the more equipped you are and will be in attaining all that God that has for you.