It is possible you are referring to a few different works or authors with similar names. While there is no widely known single "long paper" with that exact title, the most likely intended works are:
Were you looking for a of one of these books, or did you have a different M. Piper in mind? Life by M. Piper
by John Piper , a highly influential book (and often studied as a long-form essay) on living for eternal purposes rather than trivial comfort. It is possible you are referring to a
by Ailsa Piper , a memoir centered on walking through grief and recovery. by John Piper , a highly influential book
by Martha Piper , which examines the history and mythology of piracy.
by Mary Pipher (often misspelled as Piper). This is a 2022 memoir that explores resilience and finding light in dark times.