It's usually pretty obvious.  Go into a Crypto chat room.  Every 4 years you'll see people talking about buying helicopters and castles.  On the news they'll be showing you how to buy into crypto, sitcoms will be making episodes about it, you'll see that get rich quick friend on your facebook feed talking about how he's going to be a billionaire...

Just remember that short term trading is no different from gambling, and don't pretend it is anything else.  Also keep in mind the old wall street saying, "bulls make money, bears make money, pigs get slaughtered."