In my saner moments, I realize that I contributed nothing to my salvation. Oh, I used to love telling people how "I" accepted Jesus, completely ignoring passages like Ephesians 2:1-10 (that passage teaches that I was dead in my sins until the Lord gave me faith to receive His saving grace). But in my precious moments of spiritual sanity, the Lord allows me to understand that I owe my salvation completely to Him. Therefore, I scratch my head in bewilderment, baffled but deeply grateful that He chose to save me.
The hymn writer Isaac Watts, back in 1707, wrote about the awe (hence his word, "aweful") he felt at being invited into the Lord's house. Listen to his lyrics of gratitude, and let them draw you into a saner moment of worship.