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.
Everything does not aggravate to persuasion, sometimes you don't need to persuade someone into doing something especially when it happens to be financial activities. First and foremost, interest is the primary factor with just a few consultation which explains the kind of investment he/she is about getting into, secondly the individual representation to what is being talked about in terms of appearances, trust and in behavioural aspect. I believe no parent would like to identify part of their hard earned money towards a child who is behaviourally ill because they may find him shady enough to lure them into danger trap and wonder if truly what he propose to them is really authentic.
Not undermining, it is a nice conduct advising one's parent to start investing and helping them manage it especially when they have enough to spare because it will be hard for them accepting the process when they barely can sustain, once told about the volatility and probably may not be opportuned to withdraw when wanted due to some Bitcoin DIP happening.