In two things the world makes a mistake in doing the opposite of what makes sense:
Concerning one’s livelihood, the Talmud (Ta’anit 2a) states that the key is in G-d’s hands. All a person’s worries are futile as the verse (Tehillim, 55:23) states: “Cast your burden on the Lord, and He will bear you.”
However, instead of man relying on G-d we see that man is obsessed with devising schemes and strategies concerning his income day and night.
Regarding one’s service to G-d though, the Talmud (Berachot 33b) states: “All is in the hands of Heaven, except for fear of Heaven.”
Ironically, it is specifically in this matter that man suddenly trusts G-d, thrusting the burden entirely on G-d. He is content with the request in his morning prayers “place into our hearts understanding,” and does not seek strategies in his service of G-d on how to become fearful of Heaven.