Writing a good negatively charged poem is like taking a good **** for the Psyche; it is toxic and you'll be diseased if you do nothing but wallow in it, but it is great to detox and get it as far out of you as possible.
It even tells you what your habits have been like, if you know what to look for. And sometimes, you feel like a new person afterwords; lighter, more nimble, sort-of post-deficum bliss, and your pants sometimes even seem to fit better.
Just remember not to force it; just accommodate it when you feel it. Hah; it's as I've always said:
"Always answer when Mother Nature calls; that ***** can leave some nasty messages."
Airs of facetiousness, though you know what they say about truth and humour! I apologize for the.. abrasive imagery here, but I thought it applicable on a base level.