The Pursuit of Happyness (2007)

Chris Gardner is a bright and talented, but marginally employed salesman. Struggling to make ends meet, Gardner finds himself and his five-year-old son evicted from their San Francisco apartment with nowhere to go. When Gardner lands an internship at a prestigious stock brokerage firm, he and his son endure many hardships, including living in shelters, in pursuit of his dream of a better life for the two of them. Based on a true story.

Official website: http://www.sonypictures.com/movies/thepursuitofhappyness/