Well first and foremost, as the words of the above song suggest, we must choose to be holy and in choosing to be holy we must be willing to set ourselves apart for God.
Secondly we must give our all to God, so that He can cleanse me from within and make me holy. We can’t truly dedicate ourselves to God if we keep part of ourselves from Him.
Philippians 3:15-16 (The Message)
So let’s keep focused on that goal, those of us who want everything God has for us. If any of you have something else in mind, something less than total commitment, God will clear your blurred vision—you’ll see it yet! Now that we’re on the right track, let’s stay on it.
So what now? Pray!
The main way to ask God into your life is to get down on your knees and pray to God, a prayer from deep in your heart. A prayer of sincerity, a prayer of compassion, commitment and dedication to Him.
God will hear your pray, and He will purify your heart.