I got this real real good friend, who I care bout a lot, and I watch weed destroy him more and more each day. Ofcourse he knows he has a problem, even told me so himself, but no matter what I do or say, he just wont stop to think about it. He says he needs it to escape from reality and that eventually he will stop smoking. But that doesnt make me worry any less because I know how bad it is for his physical and mental helth.
So what do I do ? How do I help him ?

To be honest, he can`t really stop smoking "eventually"..if he`s already addicted, it`s quite hard to stop..this takes a lot of good will and good friends to help him go thorugh this..Best thing you can do is try and talk him out of it, tell him about the consequences, and make him decide if he wants a normal like, or a cracked up life because of the weed..Even if u try and stop him from smoking, he still will do it when u`re not around..I don`t know much how to help yah coz i ain`t a smoker, but i have friends that smoke aswell and want to stop but can`t..i always try to take any ciggarets they take out, but that won`t last for long..it`s self control issues here, other ppl can`t do much about it. THe specific person has to make the step..best thing is to stay at his side and try and help him as you can..These are just some thoughts, you can read more oppinions on smoking and smokers from this topic --> http://forum.undernet.org/viewtopic.php?t=1223
Good luck

Your friend needs a professional help which you cannot find on this forums.
Find a doctor/psychologist and get help from them.

This is an important and serious problem and we do not want to give wrong information to you.