More Than a Bad Day

I love my job. However, my job is stressful. I'm working against deadlines, answering phone calls, trying to figure out what the calls are about, do projects for my supervisors, filing, doing orders, and so on. I really like that I stay so busy during the day. But I feel that the stress of work is taking a toll on me. I am on my lunch break right now and all I wanna do is cry and go home. I can't seem to do anything right today (make that this week). I keep telling myself that it is okay and things will work out. But my body is so tired and I can't shake this gloomy feeling. I just hope that the 2nd half of my day is better than the 1st.