"Our Deepest Fear" by Marianne Williamson (often mistakenly cited as a Nelson Mandela quote) and a poem titled "The Invitation" by Oriah Mountain Dreamer are two of the most inspiring writings available.
This poem is called "The Invitation". It was written by Oriah Mountain Dreamer. Her first name coming to her in a dream and Mountain Dreamer given to her by a Shamanic Healer. She is not an Indian Elder nor is she an American Indian.