Write your name: Just sit and write your name over and over again. It can help you remember yourself, and that you are important too. Maybe put something like "___is a real person with real problems his/her own."
Listen to music: Enya and celtic music can be good for relaxing and expressing inner emotion, but also some modern songs can be very helpful.
Light candles, incense: This can help with coping, again remembering yourself and relaxing, letting the negative energy out.
Dance: to Enya or any music of your choice. It can help express things you can't in other ways.
Write: Poetry, stories, in a journal, on scraps of paper. Write out what you feel, what's
going on inside.
Draw/Paint: Visually creating an image of your pain can help get out some of the things you're dealing with.
Scream: when it's all coming down, and you can't do anything except think about the pain of someone so close to your heart, screaming can be a great way to let it all out. Take a warm scented bath with bubbles: this will help you relax and remember yourself, who you are, what's going on in your life. also it's a good idea to check out the blue cocoon page on this site for some more suggestions about how to relieve stress and help yourself feel better.