6 top mindsets to eliminate internal friction:

1. No complaining about what has already happened
Don't complain about what has already happened; try to change it or accept it.
2. Don't dwell on past mistakes
Don't dwell on past mistakes; all the entanglement is just dust of history.
3. Focus on the present
Focus on the present. When you envy others, you might forget that others are also looking at you, envying your happiness.
4. Living alone can also be meaningful
Living alone can also be meaningful. Don't rely too much on others, don't complain about not having friends—you might also be envied by someone.
5. Don't expect anyone to understand you
Don't expect anyone to understand you, even those who are closest to you.
6. Maintain the courage to move upward
Maintain the courage to move upward, continuously improve your abilities.