Lamentations 3:37
"Who is he that saith, and it cometh to pass, when the Lord commandeth it not?"
The command of the lord is final. No other word can stand against the word of God. Nobody can speak any form of negativity over your life and expects it to come true when the Lord has not permitted it to happen. So all that should matter to us is the word of God over our lives, and I assure they are words of prosperity in every aspect of our lives because he loves us and wants us to do well.