Successful investment = correct method + long-term persistence
How to build your own trading system:
Actually, just answer 3 questions in detail
1. Buy some
2. Selling point
3. Position control, how many positions will be given under any circumstances?
These three points must be quantifiable, cannot be subjective and ambiguous, and must be implemented to meet the conditions.
If you do it, and this system is indeed a feasible and profitable model, then you will understand it, and then just keep repeating it. After the transaction is completed, it becomes a physical job, just moving bricks.
Those excellent traders often do not need subjective opinions. They only need to understand the simplest volume-price relationship and market sentiment to make judgments on the long and short direction.