Congrats on your decision; I don't have any personal experience with this but I think that pot addiction is one of the most overlooked. People seem to think it is harmless but it can really wreak havoc just like any other on your emotional and spiritual well-being. Here are some links that might be helpful. I used to live with someone who detoxed off marijuana and the thing she experienced was crazy dreams. I think there are some other symptoms that you can have during the first few weeks that are more physical. Good luck!
PDFs on marijuana from NIDA:
NIDA - Research Report Series - Marijuana Abuse Marijuana - InfoFacts - NIDA NIDA NOTES Index, Volume 10, 1995 Marijuana - Topics in Brief - NIDA
general marijuana link @ NIDA
Marijuana - Drugs of Abuse and Related Topics - NIDA