We do not need positive thinking for such a situation. Condemnation barks out as we make an attempt at progress using our our flesh. And many people forever try a better approach with their flesh. But flesh will always produce flesh. We have been forgiven of our sins, yet, if we continue to live by the flesh, we will commit sins again, for sin is in the flesh.
Sin is a principle.
And since flesh has sin in it, we must not live by the flesh. If we live after the flesh we will sin, and we will have, as the result, condemnation. You will have condemnation, even though you're in Christ, if you yet walk after the flesh. There is nothing to condemn us if we walk after the Spirit , for trusting in the Spirit to work out the good we need in our hearts and lives, leaves the flesh laying there unused. Unless we believe He died for us, we cannot enter into covenant with Him.