Intellectual curiosity also helps because it encourages you to simply pursue knowledge and dig below the surface level of information you are bound to find.
View people as sources of complex, fascinating knowledge and seek to discover it for your own benefit.
To lower your guard enough to properly learn, you also need to learn to avoid the echo chamber, which is where your opinions and viewpoints get amplified.
Instead, you need to get into the habit of seeking out opposing and alternative viewpoints to avoid confirmation bias.