"For all the promises of God in him are yes and in him Amen, unto the Glory of God by us." (2 Corinthians 1:20)
The answer to every prayer you pray according to His will, the answer to every promise of God, is always yes and Amen.
When you and I find out what God promises in His Word, and then pray according to that Word, God will always respond with a resounding YES!