When I pause I forget who I am or why I exist

So I mused over four letter words. Came across this: Islands signify the truths of faith.
Four. But you only have one. Then I came across three. Three books. Found in the Young Adult section but interesting nonetheless.

Marshall, James Vance. Walkabout. Sundance, 1959.
Mary and her young brother Peter are the only survivors of an aircrash in the middle of the Australian desert. Facing death from exhaustion and starvation, they meet an aboriginal boy who helps them to survive, and guides them along their long journey. But a terrible misunderstanding results in a tragedy that neither Mary nor Peter will ever forget…
http://www.realtimearts.net/article/58/7297 The Film
Paterson, Katherine. Jacob Have I Loved. Harper Trophy, 1980
Esau have I hated …
A young girl feels always second to her sister, like the twins Jacob and Esau of the Bible. She feels God despises her for no reason and makes her life go sour, but before she is completely lost to bitterness she begins to forge a new identity and life.
This book was also made into a film, with Bridget Fonda.
Paulsen, Gary. The Island. Dell, 1988.
The island is in the middle of a small lake in northern Wisconsin. It is uninhabited until the summer when Wilstet ‘Wil’ Newton, who is 15, arrives. Wil is at first drawn by the simplicity of the place, but as his concentration sharpens the island unfolds its matrix of life and death, mirroring the unfolding layers of Wil’s self-consciousness. He fills notebooks with watercolors and writes essays about what he sees, feels, remembers and observes within. He decides to stay, Thoreau-like. But his unconventional search for knowledge makes many people, such as his parents, uncomfortable because they just cannot see the value in Wil’s pursuits, nor in his connection to the island. To the island comes a parade of visitors: his recent friend, his newfound enemy, his parents, a reporter, a counselor, and a television news crew. Eventually he stays through the night and remains for days on the island, wondering if he will ever go home.