The character in a 90s novel who wanted to lose 7 pounds, stop smoking, and develop inner poise is Bridget Jones from Helen Fielding's novel "Bridget Jones's Diary". The novel follows the life of Bridget Jones, a single woman in her thirties, as she navigates her way through life in London. Throughout the novel, Bridget sets herself a number of goals, including losing 7 pounds, stopping smoking, and developing inner poise.