@happiest: You don’t mention if you are a male or female or how old you are or if you are the owner of your home or the renter.
Trust me, I feel the same way when I get together with my family for the holidays.
If you are over the legal age to drink alcohol, enjoy the 4 cups of wine at the Seders. (This does not mean I endorse/encourage alcoholism or underage drinking). The wine will “chill” you and you will be able to relax a little.
Maybe you can get together with friends during Yom Tov. Go for a walk, maybe sit outside…maybe go to a class at a shule, maybe visit the elderly in one of the many nursing/assisted living homes in your community.
Or, just close your door to your bedroom (if you have your own room) and read a good book.
I hope this helped you and alleviated some of your anxiety.
Much luck and have a wonderful Yom Tov.