Buy the coins that you believe in and have an understanding of before buying or trading them.

If your strategy is to listen and read others' thoughts about such coins and it's part of your strategy, don't always believe what others say. I've noticed the unstoppable suggestion of buying those hyped coins that are par with Dogecoin.

And that won't make a lot of millionaires instead, it will make a lot of cry because they've just overheard and listened to a stranger.