How To Rescue Your Novel's Story When You've Lost Track Of It

I've lost track of my story how can I rescue it?

You can lose track of the novel because it such a huge enterprise, its willed, its often very long and to keep you the whole thing in your head at all times is what you need to do when your writing it and a course our lives intervene very often, so we lose track of the novel and they only way of getting back on track is to re- reed of what you have written and try to attach the next piece to it.