Look it up in a book, please to confirm what I'll say here.
Children play. Why? Because that's how they grow and learn. Naturally, no schooling needed. It's the best way, the most effective way, and the way that's most fun.
Many adults stop playing. They stop growing and learning. That's their own doing and their own choice.
You do what you choose to do, and become who you train yourself to be.
Playing allows you to experiment, try on different roles, make mistakes, try things again, in new slightly different ways, from different angles and to get used to the moves all in a safe environment (because, whether you win or lose it's just a game).
You need to be in that energized-but-relaxed state in order to perform well. It's a fine balance, and sometimes you get carried away by passion and excitement, in which case there may be tears . . . or hooliganism.
So be playful as you engage with language.