Direct Answer
The transcript doesn’t list specific modern “small compromises,” but Finny’s warning implies that repeated, willful sin—especially done “flagrantly” and without fear of God—can train a person toward a hardened, possibly irreversible state.
Support from Transcript:
Which repeated choices in your own life dull the fear of God rather than deepen it? What early steps of repentance could interrupt the “process” before it becomes entrenched?