Thank you for your question and welcome to ADHDCentral.com.
Adderall, when taken as prescribed, is not usually addictive, however, it you feel you are addictive you should speak with your doctor about weaning off the medication.
If you cannot afford a doctor, there are free clinics throughout the country. You can look up to see where the closest free medical clinic is at: http://freemedicalcamps.com/
Eileen