I'm happy you've had a good experience in Australia. You should remember that the barriers to learning English and Chinese are fundamentally different. English requires mastery of about 100 phenomes before reading and writing skills reinforce each other and learning accelerates: the language gets more difficult as you get better. In contrast, the difficulty curve for Chinese is steep when you start but gets much easier as you improve.
Working hard is important, but equally important is giving yourself the tools to maximize learning. Someone struggling to get through Dream of the Red Chamber with a traditional dictionary is at a huge disadvantage to someone using the proper tools and resources. Learning a language is like engineering in the sense that one should use the best tools for the job, and then put in the time needed to execute.