When I was learning French in middle school, my parents put me in French immersion. So half my classes were in French. This means you learn a lot more, much quicker.
If you want to achieve anything in life, I strongly suggest you rearrange your days, make some sacrifices and go all in to immerse yourself so that you can see rapid improvements.
Do this for any topic, or for work, relationships, your health, languages, etc.

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