Craving: Cravings, as experienced by addicts can be described as an overwhelming feeling or desire to use. They desire to sooth the pain, I guess.
Ritual: Ritual behaviors can be described as activities, thoughts or ideas that addicts engage in as part of their addiction.
Using: Using is self explanatory.
Guilt: Guilt is immediate, it mostly arises from having done what your addiction is, for example smoking.
Hope this helps :D