Trading courses and coaches are useless- true or not

Tell me how hard you have worked to make money in trading?

What cognitive biases do we have to overcome?

What pitfalls do you need to avoid when interviewing for a job in the financial industry?

Everyone is asking traders' questions,Let me ask, if you apply for a job related to this industry, what should you pay attention to? Is this idea advisable? Are there any hard conditions for applying?If you have experience, please help me~

If you have a bad mentality, does this mean that you are not suitable for trading?

Do you guys have any good suggestions to save novice Huiyou like me from taking some detours?