First of all I have seen so many post similar to this topic so I like adding my own ideas when I come up with a plan so I will share a little of my own knowledge here.
So many people in this forum have been asking what they would do if they persuade someone to invest in Bitcoin and crypto currencies and at last they don't see success, so I came up with my own idea so I won't go wide I will just state based on the topic I have made.
A person can't persuade another to do something when they have not yet seen the results for example, you as a child you depend on your parents for every of your up keep and at the end of the day you go telling them that you have an investment you want to introduce to them, and knowing how our African parents can be smart with questions especially when it comes to an online business that involves money it will be a waste of energy trying to persuade them when they haven't seen the good news in you but when u stop depending on them and pay ur bills they will be wondering what's going on they will want to know what you do from there u fit run enter them and they will be eager to listen.
So the only way to persuade a person to something is when u are the example of ur words.
Op I think the word persuation shouldn't be used in terms of Bitcoin investment irrespective of whom you are trying to convince, though I have thoroughly look at the points you made concerning the subject of discussion which you categorically stated that it may have been discused earlier by some other persons, your observation and points regarding a potential Bitcoin investor is right because i believe that someone who wants people to invest in what he or she is fully involved in, should have something to show for it, Bitcoin investment is practical and everything involving Bitcoin investment should be a personal stuff so persuasion should be frowned at even though you prove to them that you have already gotten some profit in it, its also advisable to allow whosoever that's involved to make a personal decision to that effect to avoid blame.
I really love your point about showing what you have achieved so far in Bitcoin before preaching to other people about Bitcoin investment but I want you to also understand that different individuals has different believe as such there is nothing you will do to convince them to invest in what you tell them irrespective of your practical examples, these individual has centered there mindset in different things and it has made them to have a myopic mindset about every other investment no matter how beneficial such investment could be them.