Sylvia Plath is most known for her autobiographical poetry, which was written in the confessionalist "I" form popularized in the 1950s. Confessional poetry addresses issues such as death, trauma, and sadness. Plath's work was marked by a forceful, profoundly emotional autobiographical approach. She described her own feelings and experiences as subjects for poetic investigation and revelation. Plath's poems are often characterized by their stark imagery and dense language. She used many techniques commonly associated with free verse: alliteration, assonance, consonance, and rhyme. However, she also often composed her poems using regular meter, most frequently iambic pentameter. In addition to her poetry, Plath published two novels and two collections of essays. Her first novel, The Bell Jar, was published when she was twenty-five years old. It tells the story of a young woman who becomes obsessed with an idea for how life might be better if she could lose herself in a real love affair. Although it received generally positive reviews from critics, it was not a commercial success. Plath's second novel, Lady Lazarus, was published four years after her death by her husband, Ted Hughes. It tells the story of a famous poet who returns to life after being killed in a car accident. His wife does not recognize him at first but eventually falls in love with him again despite their past together.