I saw my best friend smoking during break time. buat perckapan suggestionnya dong please

A: Hmm.. B? Are you smoking?
B: Yeah. What's up, anyway?
A: Well. I am sorry to say this. But, if you keep smoking, you will get its bad effect.
B: Hmm? I can't leave it. I have addicted.
A: I suggest you to change that bad habit slowly. I think you can do it.
B: Hmm.. Okay. I will try.
A: That's good. This is for your health too.
B: Thanks, my friend