“Let us continually offer to God a sacrifice of praise, the fruit of lips that confess His name.”
The context, Jesus was killed outside Jerusalem in order to make us holy, helps us understand this phrase. The writer refers to Leviticus 7 and the thank offering associated with the peace offering. Jesus was killed to give us peace with God, which should give us pause throughout our day to give thanks or praise to God for making this happen.
God is no longer angry with you because He sent Jesus to be slaughtered for you. God is no longer going to whack you because He whacked Jesus for you. You are forgiven because God put all your sins upon Jesus nailed to the cross.
Do we deserve peace with God? No. Can we do “good Christian things” to be released from punishment? Nope. Was anything we’ve done, are doing or will do outside the scope of His forgiveness? Absolutely not.
Therefore, instead of sweating the mistakes of life (ours and/or others), start acknowledging who God is and what He has done, is going and will do for you. Can’t think of anything? Go back to a road outside Jerusalem almost 2,000 years ago.