Try any of my favorite stress management techniques listed on the left.
Journal. Here's an easy journaling technique - Write each of the things (people or situations) that are stressing you out on a piece of paper. Scribble all over it... Then tear up the paper.
Have compassion for yourself. It's no fun being stressed.
Do something that you like doing - walk, go out to lunch with a friend, journal, read a book, go to the movies, swim, take a nap... anything that feels good to you.