I'm wondering if it is beneficial to devote a whole day to a single language? Such as I would even switch my Mac's system language when possible. On Thai days I would switch it to Thai. On Lao days I'd struggle with Lao. On Vietnamese days it'd be Vietnamese. I'd only look at web sites in the chosen language, try to think only in the language, maybe find a chat partner who speaks that language.
Well, I've got a lot more to learn before I can do that with any of those languages! I just wonder if anybody finds it to be helpful. I actually don't like to do that with Japanese. I find the unnecessary struggle to be quite frustrating. I guess I'm a guy who can't relax well and I need to relax. The only time when I unnecessarily think in Japanese is when I am imagining a conversation with a Japanese person. Such as how I would explain something or answer some question. After I realize that I'm doing this I try to stop it right away!