Here is the corrected document.
Learning English is not an easy task. It takes time and requires that the learner be very conscientious. However, we wouldn’t be able to achieve good results without a skillful teacher that leads us through this long and arduous process.
My English teacher, Mr Jack, is somewhat unique. His path to this profession was quite unconventional. He was a self-taught teacher who acquired a high command of English during his many travels abroad. After he returned he came up with an idea that he could teach English as a private teacher, as there was a shortage of good teachers in my town at that time. It didn’t take long before he acquired a reputation as one of the best teachers around. Later he also obtained a formal degree in Teaching English.
I have to confess that without the knowledge and skills of this teacher, I wouldn’t have been able to achieve my current level of English. He can take teaching English to a completely different level. It is not only the knowledge that he has, but also the methods that he uses and his mere personality, which also play important roles. On one side Mr. Jack can be a very funny person. He can be described as ‘cool’ , someone with an interesting personality. However, there is also the other side of him, the more serious one. Mr. Jack is well known among students for being very strict and demanding and for being very rigid about his lessons. He definitely appreciates it you work hard and come up with good results and praise you for it. However, if you are ‘fooling around’ and falling behind with your schoolwork, or simply do not meet his expectations (when you should have), you can face harsh and merciless criticism from him. That said, he is a very honest and objective teacher and this approach seems only to serve a purpose: motivate students to work harder and make further progress.
Hope this helps. The word count is still 326 though.