Lifehack thinks so, and I can’t help but agree. It’s something I have always noticed. Sometimes you switch languages while talking simply because you feel that some things are better said in a particular language.Different languages allow us to express ourselves differently.
From what I believe, it’s not a matter of having as many personalities as the languages you know, but a matter of how much at home you are with them. Some languages don’t allow you to be yourself as much as others and vice versa.