Actually, these rules have been given very often and we can find many rules to help us succeed in trading. However, it will be much more difficult in practice, sometimes, we even understand the rules very well, but when in reality we even deviate far.
For example, we know that patience is key, but humans are sometimes in an unstable emotional state and that drives our emotions to be much worse, as a result it is easy to panic and finally impatient to make certain decisions.
And or other conditions when we are going to trade, we already understand the theory, but sometimes it is very difficult to do it, especially if it is related to coin analysis and also the market, because the market is so volatile and the price fluctuates a lot, so it can make us take the wrong steps in the analysis.
But that doesn't mean it can't be done, because every activity has a risk and if we keep trying, then it will be an experience and additional insight so that we can be much stronger and ready for the future. Indeed, learning by doing is always unlimited.