Be kind, for everyone you meet is fighting a great battle. When we are not living up to our true vocation, thought deadens our life, or substitutes itself for life, or gives in to life so that our life drowns out our thinking and stifles the voice of conscience. The only human institutions that retain their identities over a thousand years are languages, cultures, and religions. Perhaps it is not coincidental that the most intractable human quarrels and the most imperishable artistic creations are alike rooted in our languages, our cultures, and our religions. When you live in a Christianity of tips and techniques, you trivialize sin.
Sin is something external.
It's running stop signs. It's drinking too much. But God calls sin adultery of the heart. It is what you give your heart away to other than the heart of God.