why you want to convince others, bro, leave them those who don't believe bitcoin one fine day they only suffer why they do not listen your words.
If not interested to listen you then quit they dont know what bitcoin is. I gave him a chance but he did not listen. For me bitcoin is real and a big help for me and my family too. And now he see what bitcoin made for me Im successful and financially secure.
people will be more interested if they see the results that have been obtained from bitcoin and to convince the person about the investment in Bitcoin of course by explaining and providing the correct information about bitcoin and also in the investment of bitcoin currency must be patient