Sometimes your job is a big part of your life and what you identify with---it's who you are...especially if it's a meaningful occupation you enjoy. You're experiencing a significant loss. It sounds as though you've immersed yourself in your work, have been successful, and now you've been thrown a tremendous curve requiring a giant unanticipated step that involves extra time, planning, and decisions that will impact your future. I encourage you to get involved in something that you like, but have neglected because of your work ethics: exercise, music, art, photography, reading, etc. Continue your work endeavors, but try to balance your life with other things, as well. This will help you deal with all the stress.