What does it mean that “as a man thinketh in his heart, so is he” in Proverbs 23:7?

In this video, we answer the question: What does it mean that “as a man thinketh in his heart, so is he” in Proverbs 23:7?

Source Article: https://www.gotquestions.org/as-a-man-thinks-so-is-he.html