Focus on the positive aspects of your job. If your job involves assisting clients, think about how you help them in performing your everyday tasks.
Go for a walk around the building during a break. Just getting away from the desk and others can be quite relaxing and refreshing.
This is a great video that gives an illustration of how to deal with stress in the workplace.
Helpguide.org provides some great tips for reducing stress at work. These can be applied to any career and are even helpful for students.
If you try these tips and still don't find relief, maybe it's time to update your resume and start looking for another position. Life is too short to have to work a job you hate.
