Not sure, as it's something I'm still learning. Some ideas, though:

- Read a lot. Fiction, nonfiction, essays, and occasional news. Or if reading isn't always practical, podcasts and audio books do a pretty good job in the place of physical books.

- Talk about meaningful things with your friends. Make connections. Think about how the movie you just saw relates to the essay you just read.

- Engage in hobbies. Something that interests you can you can get excited about with other people.

- Jog or garden or do something physical outside, that makes you attend to the weather, the skies, the seasons, and the natural world.

- Ask questions and listen.

- Laugh at other people's jokes, and at your own.