Answers

2016-02-05T10:41:56+05:30
It is very hard to convice our elder siblings. Well I ll tell him how important our life is. I would let him know about the hopes of our parents on us. I will tell them that our parents should feel proud of us but not shameful of out behavior. Hope this brings change In him. Or else Its better I'll tell about him to my parents.. :P
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2016-02-05T10:41:57+05:30
A bad company often tends to have a very bad influence on his life. You could take instances showing how he has transformed from who he was to who he has become now. You could let him involve in stuffs he is interested in so that he slowly tends to come out of the company which has a bad influence on his life. Moreover, it is most important, if he understands the consquences he might possibly face. Only if he understands would he come out of that company.

Hope it helps.

Cheers! :)
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Good one! :-) 
Thanks. Yours too :)
:D