IMDB: http://www.imdb.com/title/tt1068680/

About:
Yes Man is a 2008 American comedy film directed by Peyton Reed and starring Jim Carrey. The film is based on the true story and 2005 book The Yes Man by British humourist Danny Wallace (who has a brief cameo in the film). Production began in Los Angeles, CA in October 2007.

Carl (Jim Carrey) is a divorced middle-aged man in Los Angeles who spends his days working as a junior loan approval officer in a bank, supervised by his immature manager Norman (Rhys Darby). Routinely declining social engagements so as to avoid meeting his ex-wife Stephanie (Molly Sims) with her new boyfriend, he has grown used to spending his evenings watching DVDs alone in his apartment while ignoring his friends' phone calls. Only complicating things is when he forgets the engagement party for his best friend, Peter (Bradley Cooper). Shortly thereafter, Carl comes across Nick (John Michael Higgins), an old co-worker who seems to have completely changed. Aware of Carl's personality, Nick persuades him that he needs to start living again and takes Carl to a motivational seminar called "Yes!" where Carl is publicly accosted by inspirational guru Terrence Bundley (Terence Stamp). Browbeaten into making a covenant with himself, Carl promises to stop being a "No Man" and to answer "Yes!" to every opportunity, request, or invitation that presents itself thereafter.