How you say this is my essay about me being in Chinese?

In Chinese, you can say "这是我的关于我的论文" (Zhè shì wǒ de guānyú wǒ de lùnwen). This translates to "This is my essay about me." If you want to specify that it's an essay specifically about yourself, you could say "这是我的关于我自己的论文" (Zhè shì wǒ de guānyú wǒ zìjǐ de lùnwen).