Sorry to hear that you just can't quit your job! Here in the US, people just walk away.

2014-7-25 my job

I asked for leave for several months. I asked to leave for several months.

(I like short sentences, so I might write something like "This is bad. I resigned in April, but our boss did not approve my resignation.") It is really bad, for previous time (I resigned on the middle of April), our boss did not approve my resignation; (Start a new sentence here. I hate semicolons!) He said that it is was because we had not recruited the new staff (staff member or staffer or the name of the job--like lawyer, salesperson, etc) to replace you.
In June, a new guy came. (In June, they hired a new guy.) And our boss asked me to handover with him hand the job over to him. But he did not carry on for long time, (He did not last. I worked with him for a month, but he still could not do the job. I had to deal with the emails from customers myself.) I worked with him for one months, he still could not do the job and deal with emails from customer individually. I was very upset. And suddenly, he left. And I still need to stay here.

I really need to leave. I have the things that I want to do. So (some people consider beginning a sentence with the word "so" to be bad. I'm not sure. Maybe a word like "eventually?") I talked to the boss. And he finally agreed. However, the other guys (who are these guys? Coworkers? Maybe something like "the rest of my coworkers did not.") did not. And my The introducer. (I don't know what an introducer is. But I'd say "The company introducer called my family. He turned them against me. My family members are now all opposed to my resignation.") in the company called my family members, talked many things, caused now, everybody oppose my resignation. My families had cold war with me. My families asked me to stay, at least the boss find another staff to replace me. (My family started a cold war with me. They asked me to stay until my boss found someone to replace me.)

Everything back to the origin. (I'm back to the start.)
What a bad experience！

Nice work! I'm so sorry that you are so unhappy with your job and that your family is not more supportive! Good luck, Kirakira!