The document is a guide by Dr. John T. Carlsen on how to effectively write APPIC essays for internship applications, emphasizing the importance of presenting oneself authentically and persuasively. It highlights common challenges like writer's block and provides strategies to overcome these obstacles by generating ideas and refining drafts. The author encourages applicants to embrace the writing process and manage anxiety, as well as to focus on showcasing their unique qualifications and personal philosophy in their essays.