When you’re at the plateau, you have to convince yourself that what you’re doing is worth it. You’ve got to be sure you know why you’re doing it, and remember it’s very worthwhile. Today I am more excited about learning about new cultures, new languages, and it gives me so much reward which I didn’t have at the beginning when I hadn’t yet really started my intense study of languages. But importantly, do things you enjoy doing, stay the course, and you will eventually get through the plateau. I always mix up my methods, focusing on immersion and making the language fun again. Another technique I use is to practice with a native speaker to iron out any consistent errors. Lastly, remember that everyone learning a language from the most experienced linguists alive to the least experienced, we all reach a point where we have encountered the language learning plateau. Many lose their motivation along the way, but it’s up to you to beat it. Good luck on your journey!