How i convince myself and my friends about bitcoin is by looking at the value of it. As you can see you see very much money and that is because a lot of people believe and invest in bitcoin that makes the value go so high. And i think that that is a good way to convince people about bitcoin.
When we provide proper knowledge to people about bitcoin, and educate them properly they start believing bitcoin themselves, when we flash back our achievements due to bitcoin then they get motivated and are encouraged to earn good amount of money and meet their financial needs easily and secure their future, with time more people are getting involved into bitcoin so to make their life good.