英语教师自我介绍

hello boys and y,i'd like to tell someyhing about myself.
i'm a very introvert ,i know little about i'm a hardworking,carefuland seious man.
i'm very obstinate as well,others can hardly change my decisions.i always depends on my spare time ,i usually go to the libray to read some books and surf the internet.i like helping others,so i bagan to be a volunteer when i was in grade 10