The Lord is never in a place where He cannot save. He is never in a place where He cannot hear. God wants to hear from us. He wants to save us. God wants to be in the middle of your life. There is one problem though, SIN.
Sin is the only thing that is keeping us from enjoying God to the fullest. Sin is what separates us from God and sin causes God to hide His face from us. God cannot look at sin with joy. He is a holy God and requires holiness. God sent the solution to sin and His name is Jesus (John 3:16). If today you know that you are living in sin and have not repented, confess it to the Lord (1 John 1:9). That could be the very reason that He does not hear your prayers and why He is hiding His face.