Answer : Role play situations that help Jamal practice saying no to alcohol and cigarettes.
Explanation : Ethan can make Jamal imagine the ill-effects of alcohol and smoking cigarettes by making him role play on situations when and how to say "NO" on peer pressure. Ethan can make him understand about the strong will power that Jamal can build and say NO for the first trial too. He can portray his own lifestyle and advise Jamal to follow his footprints. Alternatively, he can also incept some good hobbies in Jamal to distract him from these bad habits.