A Clean Heart!
God, create a pure heart in me. Give me a new spirit that is faithful to you. Don't send me away from you. Don't take your Holy Spirit away from me. Psalms :10-11NLT
This verse refers to God making my heart clean. What makes it dirty in the first place? Things such as anger, bitterness, and unforgiveness are stored up in the heart. When we repent (ask for forgiveness) of these things, then only God can make your heart pure towards him. Ask God what's in your heart. Repent of these things today and now your heart can be clean.