Rely on Who?

The following comes from the commentary of Rabbi Moshe Dovid Valle on Mishle (Proverbs) 3:2.

Many people become full of themselves when they acquire knowledge; they feel they can rely on their own unnderstanding in order to succeed in all areas of lifeBy doing so they lose out because they stop placing their trust in God, the primary source of success without whom success is impossible. This is why Shlomo HaMelech warns us "Trust in God with all your heart, and on your understanding do not rely." There is no bread for the wise, no riches for the understanding and no favor for the knowledgable. Rather, it all comes from God.

Man's understanding is too limited to achieve his destiny. Trust in God with no understanding is more productive than understanding lacking trust. We can see this from King Solomon's own life in which he transgressed the word of Hashem in having too many horses, wives and too much money.