“It is easy to rend your clothing. It is much harder, much more torturous to humble a heart that is hardened in sin. It is easy to make your garments abstemious and funereal. But how can you make your heart abstemious and repentant? We have to somehow get to the heart. After all, any of our most correct external actions without inner effort cannot help us return to God.”
(Priest Pavel Serzhantov in orthochristian.com)