Emotions do play an important role in trading and investing. Fluctuating prices affect psychology and I think if we don't have a good trading and investment plan, we can panic and sell our tokens at low prices.
But if we have a good trading plan and invest for the long term, I think we will get profit as long as we hold the tokens.
I absolutely agree with you that trading psychology, good strategy and skills are the main part of successful trading. We should calm emotions and just follow the strategy. If we give up our strategy we are more likely to regret then. But if you follow your strategy and all the same you get losses, it is a signal that you just need to change something in your strategy.
sometimes people are still calm when making plans in their investments. but when you see the market moving quickly, that's what creates panic that can disrupt investment plans that have been made.
indeed everything you mention is very important. but to master all of them, will certainly take time in developing skills.