Proverbs 27:17
(NIV)“As iron sharpens iron, so one person sharpens another.”
Context
Iron sharpening iron isn't gentle, it's friction that makes a sound, throws sparks, and removes material. Real friendship in Scripture isn't always comfortable.
For your life
Who in your life tells you the truth, even when it's awkward? That's the relationship to invest in. Comfort isn't the point.