There's almost nothing you can do to protect the assets that are earned during the course of your marriage together in the case of divorce. The best things to do would be making sure you marry someone you feel comfortable marrying and maybe a little therapy to figure out why you're getting so worked up about divorce before you're even married... (I don't mean that disparagingly, believing that therapy can be useful even in non-pathologic states comes with the territory of being a psychiatrist/psychotherapist.)