I usually don't know what I'm praying about or any other details. Afterwards I don't even remember that I did pray. Sometimes I'm led to send a note-'just to let you know I'm thinking of you and I prayed today'--sometimes not.
The best part of this is when I know that I have done what I was called to do.
It's an opening of myself; a stretching to believe that He knows better than I do for His own. I am a tiny but necessary part of His plan.
He instructs--I obey--He acts and is glorified by His believers.
"but God has surely listened and heard my voice in prayer." (Psalm 66:19 NIV)