Headed to work... job tension help?!

Headed to work... job tension help?

i'm getting ready for work! my boss fired my friend and roomate yesterday. i'm worried that this is going to make work really hard.... when i get mad and upset, it's hard to concentrate... i just shut down to keep myself from saying something hurtful.... i just stand there without focusing or doing anything. sometimes when i get this mad, i just leave.... but i can't.
i'm seeing a counsleor but i was wondering if anyone had tips on how to get through this day?

Remember that you need to keep your own paycheck coming in and be as civil and polite as you can manage. Find something in your job that you can focus on that will keep your attention for the whole day or, if you have the kind of job with multiple tasks, try setting yourself a goal of achieving a certain amount by the end of the day.
Avoid situations where you discuss your friend's firing. It can leave you open to the office tattle-tales and get you in trouble. This is a very uncomfortable situation, but try and be as professional as possible! Instead of rehashing what happened with your roommate, try and focus on helping him to get his credentials together and find a new position. You'll be doing him a favor. Good Luck!!!