Holiday season with mental illness

This is the first year I am hosting a holiday dinner and I have panic attacks, anxiety, and depression really bad. My mother-in-law kind of threw this on me at Thanksgiving. I have a weak heart and every major panic attack is one step closer to my heart giving out. Any tips on how to get through the season without going to the hospital are greatly appreciated.

Side note I don't have insurance so I am not on medication and cannot get on medication.