In fact, people don’t treat you as a child at all, it’s just your own feeling.

I think staying silent, listening more to others, being more gentlemanly in behavior, and trying to comply with etiquette will make you appear calmer and more mature.

Everyone has a child self and an adult self. You can consciously hide your child self and express your adult self more.

Sometimes innocence and childishness are different. Maybe what you think of childishness is exactly the beautiful simplicity, haha.

In addition, I think clothing may have a little impact, as well as conversation, which is one of the important manifestations of mature thinking.