My sec 3 son is slacking. Spends way too much time on computer games. Not motivated enough (if at all). Don't know whether he's really concerned about his studies. Find myself nagging all the time now and i don't like it. I know that's not the right approach cause after the constant pep talks, he just sits there and listen and nod his head. But i don't see any real effort after that. I am soooo frustrated! How do i get through to him? Before it's too late.