If you have work-related problems, don't hesitate to address them to the management. If you don't communicate with the people who can correct a distressful situation, it will only cause you undue frustration and the problem will go unsolved. Conflicts with coworkers can be especially trying and the management should be responsible for taking care of them. Don't take it upon yourself to be the mediator. This can become a never-ending source of tension if not resolved properly.
Communication is the key to minimizing stress.
The management is in place to help employees with their concerns. Don't be afraid to ask questions even if you think they are petty because it is better to ask and do something properly rather than risk causing a problem or getting yourself hurt. Also, being able to communicate with fellow employees makes the working environment more productive. If all else fails, just breathe. Sometimes realizing that you are becoming stressed out can help you calm yourself before you lose your temper or act in a negative manner.