Prayer and faith

Praying confidently for others seems so easy, yet when I begin to ask and petition for my requests why do I feel so unworthy, as if God won't hear my prayers? My own mind condemns me even though I've asked for forgiveness...anyone else feel this way sometimes? That is the great dilemma that I must overcome; if I have the faith to ask for forgiveness, then coupled with that should be the faith to know he hears me. He does hear me, and he will hear you too, but you must have the faith to first believe in him, then that you are forgiven, and finally that he dies hear you...God is real and He is waiting for you to turn to him, pray.