First of all we must share our knowledge with them. Because many of people think bitcoin as a "short way to fortune". We saw a bitcoin madness in last december. It wasn't normal and many people bought from highest prices about 18-19k. Almost all of them are regret now because of their action. I think even if we don't do anything to rise bitcoin reputation it will make itself. We'll see...
We can change them if we can hit the price high, you are right just like what happened last year to the price of cryptocurrency where in people becomes panic they are buying bitcoin when the price becomes $15k and they are seeing that the price is still growing, and if we can stop ponzi or hype maybe more people will trust cryptocurrency.