Earning money is so hard!

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I thought making money was easy in the past,but now since I began making money by myself I had to change my opinion. I'm a student in high school in China,the idea about making money came last month.And I tried to earn money by joining some ptc and paid-survey sites.At that moment I still thought it was easy! But now,I only earn $3.2 in total!Earning money is so hard to me that I want to quit . Why you can make money easier than me?Could you give me some ideas?