None of us write a dissertation on our own. We need a community to support us. That includes faculty, supervisors, family, and other students. Building that community - that academic neighborhood, if you will (or if you won't - it's my blog and I can write what I want) is important. Finding even ONE person with whom you can take the huge risks of sharing your worries and failures and struggles is really important. That ONE person who will take the huge risk of saying, "That also happens to me," can help you take a deep breath and struggle on.
You got this. Who are the people in your neighborhood?