Swami Vishwananda tells you today:

When your heart is pure. When your heart is purified from all the negativity that we, ourselves, have created, we will shine the light of God! So meditate and sing the name of God, sing “I am love!” Always! If your mind or your heart is troubled, sing it loudly with your tongue. That will calm the mind. Recite it firstly with your mouth, then with the mind until it reaches the heart and it is recited continuously by itself.