请各位帮忙把这段话翻译成英文吧,谢谢了!

"When they knock on Happiness"is a very moving film,mainly about the cause of Chris Gardner • ring true,living down and out,and the wife's life because of the poor can not bear alone to New York,but Chris • Gardner Satisfaction has been very positive,and teaching his son,do not lose heart.Hard work pays off,he eventually on its own efforts,set up his own company.
The film made me understand that we do things have to persevere,to face difficulties to be encountered,can not escape,only the efforts and perseverance to succeed.