Third Person and Personal Pronouns
Third Person
      Writing, “The writer instructed the patients.” when “the  writer” refers to yourself is ambiguous and may give the impression that you  did not participate. Instead, use a personal pronoun: “I instructed the  patients.”
When to use Personal Pronouns
        While the Publication Manual encourages the use of  "I" instead of the third person, the use of personal pronouns  "you" and "we" are rarely used in academic papers because  authors seldom address their readers directly. For more discussion visit: