Lena Dunham started working on her upcoming memoir while beginning a new chapter of her life. "When I first began this book, I'd been out of rehab for 30 days. I was in the cloud of delirium that comes with new sobriety - the world was suddenly so LOUD, and I thought that meant I knew what I was hearing," Dunham, 39, captioned an Instagram post on Thursday, September 4, when announcing the book. "If you'd told me then that the writing process would take me through the next seven years, I probably would have ripped up my contract and chucked my laptop in the tub.