The truth about crypto currency is that it is more about hodling, technically, crypto is hodling.
Most people that has been able to take profit from crypto currency trade or investment are those that have mastered the act of hodling.
Knowing when to hodl, when not to hodl is an important skill you need.
Many people trade and make profits as well but there are risks involved in trading as well, sometimes people keep the trades in loss open ror a long long time that can result in massive drawdowns and in the end complete wiping out of your capital so only trade if you have a strategy and you know the risks. On the other hand hodling is good for longterm if holding reputed coins with longterm and historic good performance.