That's how to know a good investors of bitcoin who do not see challenges but the possibilities of making their future work.
Bitcoin is a good assets to invest on but it's also has it own risk which you must learn.
As long as you remember that investing in Bitcoin is not a get-rich-quick scheme, you'll be fine.
Because it requires patience, discipline, and most of all knowledgeable enough of how Bitcoin will work for those who understand the risk.
And the last one is, to invest only what you can afford to lose.
Because this kind of investment is highly volatile and risky, so don't invest more than you can afford to lose.
You can apply the DCA way of purchasing on Bitcoin too and I think that's a part of being a good investor.