This article explains that recognition of our sinfulness and the consequent repentance are essential parts of our praise in worship. We need to have enough of an understanding of God in order to lament about the darkness in our lives. And when we encounter God in his fullness, our desperation can be turned to gratitude.
Conviction of sin is hardly possible in today's Western culture. We believe not in sin and forgiveness but in illness and recovery. Increasingly, the people who gather in churches for worship come expecting to have their self-esteem enhanced.