Most people buy high, HODL, then sell low.
For me it is right to buy if the value price of the crypto coins will be drop so that you can consume your money in buying different coins.And if the right time comes that crypto coins will be higher it's value and this is the right timing so that you would like to sell your coins in much a higherprice.
We all know the most common opinion is to sell when the price is high and buy when the price is low, but the fact is much harder than we thought, first is we don't know exactly when will the price start to drops low enough for us to buy with lowest price, and second, nothing can guarantee the price will stop falling for a very long time, and finally will we have enough patient to wait until the price get higher or we affraid and sell as soon as the price start recovering despite we may loosing profit? So i will always choose a safe way, i never buy too low and having my target to sell when i have enough profit, greedy in this market is very dangerous.