An income must be earned if you're to pay the rent and feed yourself.
Having said that, you only have one life — no one's holding your hand to the flame saying you must do this one specific job and nothing else.
Freshen your resume. Look at the job listings on your local newspaper's Web site. Look in the Classifieds. Talk to old teachers, professors or employers. See if you can discover opportunities that match your passions and pay enough for you to survive.
Also look into furthering your education with any type of college degree while you're working — whether it be something you've studied before or something brand new.
You must take control and invite happiness back into your life.