I sure can relate. Before I went on my meds back in December, I had absolutly burned myself out on work. I was always the dependable one. The one that would chip in when needed. It seemed that they needed me all the time. I made it easy for them though. I never said no. Never. So after a series of personal issues it all became too much for me to handle. So I broke down. Literally. I had to make medical leave and thats when I started taking my meds. I'm better now but I realize in hind sight that my job is only a job. Its not my life. I do not offer to help now unless I really can. Which is never because I have enough work to keep me busy. My suggestion to you is to tell them NO. No. No. You have your own life and thats the way it is. I think you'll find once you move your job from # 1 priority, your whole additude will change. Towards your job and towards life in general.