Hugs to you. My first suggestion is the rules, expectations and duties. They need to help a lot aroung the house. Cleaning, laundry cooking, yardwork.....
Second: you need your time and space and your sewing area is OFF limits....
Third: take time for YOU!!!! if you want to sew in peace and quiet, have them leave for an hour. They can go to the mall or park. They need time together also.
Last. Remember....We're here for you. Deep Breaths....Hugs coming your way. Thanks for sharing.