Psalm 145:18-19

The Lord is near to all who call on Him. To all who call on Him in truth (without guile). He will fulfill the desire of those who fear and worship Him (with awe-inspired reverence and obedience); He also will hear their cry and will save them.

When we have a problem hearing God or getting our prayers answered, we need to check our hearts. Are we in reverence toward God? God will not answer our prayer if our motivation is not according to the Word. Changing our hearts and getting in line with God takes a second.