Definitely carve out time each day to do something you love, whether that be reading a book, re-watching a favorite tv show or movie, or lighting a candle and enjoying a beverage of your choice! For me, working out and cleaning my house are two things that let me burn off excess energy and stress.
Just know that no matter what happens you are going to be MARRIED on Saturday and starting your life with your new husband!! Good luck!
I'd say if you are stressed about wedding tasks that are still to-do, consider just....not doing them! If you haven't done them already, they probably aren't important. I remember so many things I was stressed about in the planning, and then day-of, so many things I'd planned didn't go the way I'd planned LOL but it was still the happiest day of my life and I literally just didn't even care that things were "going wrong" because my husband and I were so solid and it's honestly the only thing that matters. Your guests just want to see that you're happy, talk to you at least a little, be warm, and eat.