When we pray we not only expect to be heard by God but also to hear from God. Prayer therefore is talking with God in a dialogue relationship or conversation. The apostle John said in 1 Jn 5:14-15 that this is the confidence that we have in Him, that if we ask anything according to His will, He hears us....
Having a voice with the monarch of the universe at any time in any place is surely one of our greatest priviliges. Adopt the Nike principle: "Just Do It"