Well I finally joined this site but unfortunately I can't come here that often because of school. I'm very tired because school(1) is so boring, everything is the same. Because of school, I don't have time to do the things I enjoy because(2) by the time I get home it's too late. I just(3) eat my dinner, study, then sleep. I want to finish school as soon as possible. I often think about the(4) future. I want to be good at my job as a chemical engineer but, in order to be good, I need to speak at least one foreign language. That's why I need to speak English very well. A lot of people say that learning English is easy but I don't think so because I still can't speak it fluently. I hope I can improve my English so I can do better(5) at my job in the future.

Hi Esra! There are some parts where I wasn't sure what you were trying to say. If I got it wrong please let me know so I can help you with what you were trying to say. :)

(1) I changed "it is so boring" to "school is so boring" because it wasn't clear right away if you were referring to "school" or the "site". 

(2) You can also use a semi colon here instead of "because" but if I were speaking this sentence this is how I would say it.

(3) "just" emphasizes that this is all you do and you have no time for anything else.

(4)"think of the future" is ok but "think about the future" fits better with what you're trying to say.

(5) I assumed you're already good at your job and what you meant to say was to improve or do better at your job.