Since God has the final say, a wise man would totally rely on Him, ALWAYS!
Psalm 23 says the Lord is my shepherd. A shepherd ensures that you are fed, guided, and shielded.
Jeremiah 29 says the plans God has for us are of good, not of evil to give you an expected end.
These ever-present reassuring promises are just a tiny drop in the ocean of the many beautiful pledges God has made to us. They are the basis on which to ultimately rely and trust God wholeheartedly.