The first one: DO NOT learn a lot of vocabulary. Too many vocab alone won't improve your speaking ability. On the contratry, they will defeat your confidence, and make you vernurable in learning.
The second one: DO NOT learn new lesson everyday if you have a hard time trying to keep up with what you learned on previous days.
The third one: DO NOT only speak Mandarin, also write it. Write something, essays, journals, etc. in Mandarin helps, even when you are the only reader.
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