I was unsatisfied with EotE's simplistic rules on the addiction obligation, such as how to overcome an addiction, and how often an addiction must be satisfied. I made some rules that you may adapt to your EotE games.
https://docs.google.com/document/d/19b-xSFXaIEq2GaWcZreC_jdKe6mZIjgR38jEPLzkaSc/edit?usp=sharing