Why is it so, I mean SO difficult to find pleasure in what is good and right?

We cant really help people choose what they really want after all what life showed them. It is actually a personal choice that they wanted to be like that. I don't believe that people or the environment force them to be like that its because why are some people who are with the same situation being able to get out of that bad habits. Even I tried those things and yet I realized that I don't want that kind of life I don't want to end up being miserable for the rest of my life. I believe that it is only yourself who can solve these personality problem because no matter what you tell them or do if they their self don't what to then it is still useless. The change must come first in the inside not from other people. May be what you should do is just guide him and just believe that he will change.