It doesn't matter what you call them, their power is readily acknowledged. I am talking about affirmations, prayers, requests, or the act of manifesting.
Thoughts, words, and intention are how we shape our world. They can be used in positive and negative ways, so are best approached with humility.
In Traveling Mercies: Some Thoughts on Faith, Anne Lamott writes that the best two prayers she knows are, "Help me, help me, help me" and "Thank you, thank you, thank you."
It does not matter if you are sending your thoughts and words out to "God" or "The Universe" - I believe they are the same, and that the thoughts and words will have the same effect.
In her book Anne Lamott also mentions a friend that makes me laugh with her simple approach. The friend's morning prayer each day is "Whatever," while her evening prayer is "Oh, well."
While that is funny, if I had to choose I would take "Help me," and "Thank you". It is important to think good thoughts while manifesting your life.
"With our thoughts, we make the world." - Buddha