Charles Ellicott Commentary Proverbs 19:3

"The foolishness of man subverteth his way; And his heart fretteth against Jehovah." — Proverbs 19:3 (ASV)

The foolishness of man perverts his way.—A man’s own self-will (Proverbs 1:7) overturns his way. Stops his progress, whether in temporal or spiritual matters, and then, instead of blaming himself, his heart frets against the Lord. (Revelation 16:10–11.)