When I started to get good at my second language (Japanese), I found it easier to be outgoing than when I was using English. Now it's been several several years

When I started to get good at my second language (Japanese), I found it easier to be outgoing than when I was using English. Now it's been several several years and I speak Japanese and English every day, though I use Japanese a lot less (maybe 10% of the time), and I think the distinction has gone away. Sometimes I do find myself wanting to use a Japanese phrase when I'm having an English conversation, though.