Alone in Antarctica by Felicity Aston (2013)

 This is a personal account of a woman's ski trip across the Antarctic continent alone.  It's interesting how she keeps her sanity, or not.  At some point in the trip she starts talking to the sun, who becomes her best friend.  However, I don't think that much of her, as this is an ordeal by choice and although she didn't address I suspect it was potentially risky for others who would have to save her if things went south (so to speak).