How do you measure success?  Try creating a list of and prioritizing.  What comes to the top?  Is it quantifiable?  Image an arts organization.  Do they measure success by the number of attendees?  How beautiful or though-provoking the pictures are?  The media coverage of the exhibit?  Letter to the editor (either for or against)?  Is it the ‘you must see’ event in your community?  The donations received?

What is your metric for measuring success?