Liars by Sarah Manguso

When Jane, an aspiring writer, meets filmmaker John Bridges, they both want the same things: to be in love, to live a successful, creative life, and to be happy. When they marry, Jane believes she has found everything she was looking for, including - a few years later - all the attendant joys and labors of motherhood. But it's not long until Jane finds herself subsumed by John's ambitions, whims, and ego; in short, she becomes a wife.

As Jane's career flourishes, their marriage starts to falter. Throughout the upheavals of family life, Jane tries to hold it all together. That is, until John leaves her.