Persuading in daily life

I recently was talking to a friend about smoking weed and drinking. I was trying to explain to him all the reasons we are better off living a sober life. In summary I was trying to pursuade him to stop using drugs and alchol. Some of the points I made were that why would a person give into addiction when they have the strength of God on their side. I also told him to put it in to perspective of the future. I asked if he would allow pot plants and alchol around his kids when they were growing up. Of course he said absolutely not. I also asked him if doing the things he was doing on a regular basis would get him to become the husband and dad that God wants him to be and He wants to be. Again the answer was no. Overall I would say having him look through the eyes of God and what he wanted for his realationship with God, and then putting his addictions into the percepective of the future life he wanted worked very well. He said he agreed and would just have to feel it in his heart to take action to live the life god wants him to live. He agreed so now we will see if he takes action.