Today I get got up as usual at six thirty, and gave kisses goodbye with to my family. I arrived at the company (Most people would say "at work" rather than "at the company," but  it's fine either way.) before eight o'clock. Then, I begin began the day's work. I'm a purchasing assistant ang at our company, it is in a beatiful city --Hang Zhou. Even I have a different mood everyday, but I'm always practised diligent with my work. I'm very pleased with my life now, the dull life and the happiness. (Or, you could say, "I'm very pleased with my life now, even though dull, it is happy." I am unsure of exactly what you want to say here.)

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Pretty good. You're just having some trouble with tenses. I'm unsure about the word "practised" because it's used in British English, not American English (and you're probably learning British English, since you're from China).