If you haven’t checked out the Careerealism website and blog, you should. Their career advisors write and tweet some of the best career management and job search advice out there.
CAREEREALISM-Approved Expert Chrissy Scivicque wrote “15 Questions to Ask Yourself Before Making a Major Career Change.”
These are questions all career changes should answer BEFORE they quit their current job or enter a degree or training program. These 15 questions are the things I thought about before I made my career move.
Also from DeniseMpls:
DeniseMpls Career Services 
Thank you for posting such a clear list. I will definitely review it as I continue through my 365 day challenge.
Glad you found this helpful. Also check out 4 Steps to Advancing or Making a Career Change:
http://denisefelder.com/2010/07/01/4-steps-to-advance-your-career/
Good luck in your challenge!