判断下列语段是否正确?怎样才能将作文写得更好?

判断下列语段是否正确?怎样才能将作文写得更好?
I can still remember that I was poor in English. It was you who helped me with my English no matter how hard it is.When I feel upset,you encouraged me to learn it and never give it up.Although I always get in trouble,I still feel happy because I do it as hard as possible by myself.
Last Friday,our school held an English-spoken contest.I joined it.To my surprise ,I got the first prize.Throughing this contest, I know there is no trouble in doing everything that you want to do if you put you heart into it.