英语简述电影《当幸福来敲门》

It is said that this movie is inspired by a true story, and I want to say, this movie does inspire me a lot. What impressed me most are: Christ’s wife left him because of life pressure; Christ’s love to his son and Christ’s strong belief towards life. Through these, I know that it is not easy to be a good husband and a good Papa, since in reality, only love cannot only make everything. And I also learn that one has to strongly believe in himself, no matter how difficult the situation is, but of course, hard-working is indispensable

内容：
In 1981, in San Francisco, the smart salesman and family man Chris Gardner invests the family savings in Osteo National bone-density scanners, an apparatus twice as expensive as an x-ray machine but with a slightly clearer image. This white elephant financially breaks the family, bringing troubles to his relationship with his wife Linda, who leaves him and moves to New York where she has received a job in a pizza parlor. She wishes to take