Well, as you have stated that people tend to see first the proof or evidence of a certain thing you are claiming to make them believe, I will just make my family and friends believe on my claims by letting them see the fruit of my success through my own story and to the stuffs I currently have that I got because of bitcoin cryptocurrency. I will teach them the exact way I do to earn my bitcoin so that they can try it by their own and let them see it for their own that what I have been saying is true to make them convince.