You are distracted in prayer. --Try to avoid distractions, but don't worry if in spite of everything your mind still wanders.
Don't you see how in ordinary life even the most considerate children play with the things about them, and often pay no attention to what their father is saying? This does not imply lack of love or respect: it is the weakness and littleness peculiar to a child.
Then, look: you are a child before God.
-- St. Josemaria Escriva: The Way