Struggling with Depression at Work

Anyone else pull themselves out of their depression bed and use all your energy to go to work this morning? I’m struggling majorly. I’m having trouble getting my work done. It takes me 10 minutes to address and fill one envelope. I end up putting my head on my desk or breaking into tears. I don’t want to be here, and I can’t afford to not be. I’ve stayed in my office with the door closed trying to avoid people at all costs. I haven’t showered in days, although I did wash up a bit this morning. I finally ate something this morning as well. I’m feeling so hopeless with my situation and see little reason to keep trying.