This is what the Lord says: “Cursed is the one who trusts in man, who draws strength from mere flesh and whose heart turns away from the Lord. That person will be like a bush in the wastelands; they will not see prosperity when it comes. They will dwell in the parched places of the desert, in a salt land where no one lives. Jeremiah 17:5-6
God knows that we need strength other than our own to survive. Let that strength be not flesh or another person, let it be God. When we hope in people that hope is short lived but when we hope in God our strength is renewed. With Him we know that our strength will always be renewed.