My son, give Me thine heart.
The Lord desires, more than anything else, that you give Him your heart. The problem is we often only give Him part of it. The rest we keep for ourselves or something else. Jesus wants our heart so that He can fill it - with His love, with His peace, with His joy. A really happy Christian is one who has given his whole heart to the Lord Jesus. A heart that is given to Christ is a full and happy heart - and so is the person it belongs to.