1) The document is a preface written by Sudhir Vaidya introducing his autobiography. He notes that while he has tried to document memories in the past, he was unable to do so consistently due to preoccupations.
2) His childhood circumstances made him strong-willed yet outspoken at times, but his wife Sumitra helped him understand his "hidden vibrations" through her sensitive nature.
3) He was inspired to write his autobiography like Randy Pausch's "The Last Lecture" to share his unique life experiences and philosophies developed from overcoming difficulties almost single-handedly.