I now lack the juice to fuel the bluster to conceal that I am a simpleton

The linked article is about author Padgett Powell's essay on his creative process and the challenges of being an artist. Powell reflects on his struggles with self-doubt, the pressure to maintain a public persona, and the desire to be honest about his limitations as a writer. He delves into the "bluster" and "concealment" that often accompany the creative life, ultimately acknowledging his own "simpleton" nature and the difficulty of sustaining the "juice" needed to fuel his art.