Some confidence are stupidity. One of the stupidity is to gamble with coins and thinking that you are trading but instead you are a gambler. Another is to use a high leverage that will make you to continue to lose. Another one is when you are not using the amount of money that you can afford to lose. It is better not to have confidence and not trade if not following the trading rules.
These types of confidence have emerged because you are seeing trading the wrong way, that you end up trading like gambling. These are very common in the market, and they all end up losing and regretting. But the moment they learned from their mistakes, there will be a change of mindset as a trader. That's when they start trading through creating good market analysis, and trading within their limits. Little by little, confidence is built through their consistent exposure in the trading market.