As a father, there is little else that can warm your affections like your child calling, "Daddy!" It's interesting that the shortest prayer in Scripture is "Abba, Father." (Rom. 8:15; Galatians 4:6). And when asked how to pray, Jesus began, "Our Father . . ."
I've been in a recent season of dryness in terms of my prayer life. I'm just finding it hard to focus. I have found myself returning to the simplest, most childlike prayer in the book, "Abba, Father, Amen." When I don't know what to say or how to say it, I simply call in his direction and shout his name.