Vent away! The change to a healthy diet should help you a lot. I've been watching lots of cooking shows and trying all kinds of new recipes. It's really kind of fun to challenge yourself to find delicious and healthy new recipes.
One thing though, I don't think that any doctor could ever in a million years get me to cut out my morning cup of coffee. That would NOT be good for my health or the health and safety of anyone around me!
Let us know how it goes.