eve, just take a week off. It sounds like you just need to take a break from your toxic work environment. Even if you can't afford it, take the week off because you can always budget around those 5 days of work you miss.

Then, don't think about your work or toxic work environment. Just decompress and rebuild your stores of emotional and physical energy by relaxing; watch tv/movies, go for walks, eat junk food, sleep in late, whatever you usually do on days off or weekends to decompress.