I volunteer work well work for health insurance and to get out of the house 30 hrs a week. I got so exhausted working full time I had to tell them sorry I can't do it. At beginning of sept I stepped down to 4 days a week and could not be happier. Goodness I forgot what it was like to have free time, what it was like to spend time with family, what it was like to do a hobby now and then, attend events as they crop up.... Good lord there's more to life than work, home, sleep, pay the bills, repeat then take 2 weeks vacation a year then repeat until retirement. No that's not how I see my self living. 

I warned them 2 months in advance I was going to drop in hours. Even though we've been down in staff all year and the curse that makes people quit our department keeps happening... I'm fed up with it and stepping down to pt hrs. I am so sick of spending my first 2 days of vacation recovering from severe exhaustion it isn't worth it any more. If my health was tanking that badly the job isn't worth it any more.