Lamentation 3:37 Who is he that saith, and it cometh to pass, when the Lord commandeth it not?
Sometimes ago, I decided to do a medical test in the laboratory. The doctor didn't recommend that I do it but I felt it is one of the test that I must do as an adult. When the result came, it wasn't good. I rejected it and I declared God's word over my health. Also, I knew that the result was wrong because I shouldn't have eaten before my blood sample was taken. Later, I met with the medical personnel and I was confirmed normal.
You need to know that God's word supercede the words of anybody. Our human nature is wired to accept whatever we are told especially physical things but we must train our spirit man to respond to spiritual information. The understanding of spiritual information is what becomes a revelation. If God didn't say it, don't accept it.
In God's word, He said you are blessed, he said you cannot be barren, he said he'll make you a joy to many generations. He said he won't allow the sun to smite you by day nor moon by night. He said you will fulfil the number of your days. The more you search the scripture, the more you'll see what he said about your life.
Whatever negates the scripture should be rejected and discarded.
CONFESSION: God's word shall come to pass in my life. I cancel negative pronouncement over my life&destiny. I accept God's verdict and that's okay by me.