The definition of probability

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

Winning ratio and profit-loss ratio, which one do you value more?

For the real-time market, should we keep our original intention or follow the trend?

Are you happy doing business?

There is no such question, so I mention it.

I have been unable to set the stop loss in the transaction, how can I do a good stop loss?