BTC surpasses $30,000 mark

How do you handle when you're in the "wrong trade"?

I heard from trading masters that transactions are divided into correct transactions and incorrect transactions. Profit orders may be wrong transactions, and loss orders may also be correct transactions. How do you define "wrong trade"? What is the most impressive mistake you made? What kind of result? What enlightenment did it have on your subsequent orders? I hope you guys can share it, thank you!

What would you say to yourself if you went back to your first day in trading?

As a "trader", what trading discipline do you have to restrain yourself?

What should I do if I am about to liquidate?

Seeking expert guidance, what is the difference between left-hand trading and right-hand trading?