Traders should never rely on luck actually. The price movement is a regularity which implies that the price is moving accordingto particular events in the economy of certain countries or in world economy. Moreover, traders should never think that forex traing or crypto trading are easy, and you can earn there fast money. It's not like that at all and if you will think this way you will never face goo sums of money. To my mind, all traders from time to time think that getting money is an easy process, nevertheless, it lets them down a lot.
I think that you have to be rational and rely only on the results of your nalysis and your personal knowledge and skills.