As they say, “patience is a virtue” and with that being emotional is not also good in this industry.
You should have a strong mind, heart and determination in order to fulfil the investment that you have started.
There are always risk in every financial decision we make, thus we should aim for the direction that profit will be gained.
The idea of "diamond hands" was risen lately, diamond hands means the opposite of weak hands, if you are someone who sees a small drop and get scared and sell the price that means you have weak hands and you will end up losing money in trading.
However if you have "diamond hands" that means you can hold even if it drops 70%+ because you do not care about the short term quick falls, you want to sell at a certain price, you have a goal and you will not be selling until the price reaches there, doesn't matter if it goes down huge amounts until it reaches there, it could literally fall very very low but at the end of the day you can wait for a very long time if you have diamond hands so that fall doesn't bother you. In trading world being capable of removing emotions and having goals that you set and following that, you will be capable of profiting without a trouble.