DowJones Daily Chart Signal

How to distinguish between "noise" and "signal" in the trading field, and extract truly valuable information?

The financial market is flooded with a lot of information all the time, how can we extract something of real value from this information?

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

How can I have the ability to make stable profits?

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

Fund management has always been a headache for me. May I ask you guys, how can I do a good job of position control?