Best way to HODL is buying in cheap and wait until it goes up it's value since if you can buy back once it goes down then it is good deal. But it will really depend on what you are buying if its BTC then it is good for long term but if its an altcoin then you may need to be aware that it could take months before the value it pump up even those top ranked altcoins we cannot make sure if the value will rise up.
That's why we need to make a research and analyzing and making prediction could help you be positive and not affect for those FOMOs and FUDs circulating in social media and forums.
Especially in Bitcoin, we know how it is worth to invest on it and hold for long term, so we should just simply hold it when we do have spare money to buy and then wait for years or even do a short term trading, if you know how to make strategy on it, you will always benefited thru the pump and dump of it.