In a personal new essay, Gwyneth Paltrow opened up about the moment she realized that her marriage to Chris Martin was over and how the couple navigated their "conscious uncoupling."She also gave advice for couples who are looking to follow their path.Gwyneth Paltrow and Chris Martin raised a lot of eyebrows when they first announced their "conscious uncoupling" from each other in a newsletter posted to Paltrow's lifestyle brand blog, Goop.