You are yet to invest in bitcoin, so how do you explain to people how it is purchased, security and why it save to use than fiat. All these can be preached or thought to someone when you have a personal experience. So you first need to invest before spreading its adoption. Let it start with you.
Then you could go on and preach to them about the experience you have gotten from it.
Yes, experience will tell it all. And even without preaching others about bitcoin, if they happen to see you growing and embracing new positive life changes, then surely they will become instantly interested in what made you rich or improve your way of living. So invest first in bitcoin and let the whole world see how far have you got, and only by then you will come to influence the minds of other people.