The director recently joined stars Benedict Cumberbatch and Chris Pine in Tokyo to promote his new movie Star Trek Into Darkness, and fansite TrekMovie.com has revealed details of a video interview he gave in Japan.
JJ revealed: "I don't like going to the movies to feel bad. I don't like going to the movies to feel depressed and feel diminished. The reason you go to the movies is to feel bigger and stronger and happier.
"So this is a movie that they certainly go Into Darkness, but I would be the wrong director if it was about characters staying there.
"This is very much a movie about hope, about love, about romance, and about facing something that is truly terrifying and finding a way through the connection of your family and surviving and being stronger afterwards."
The Lost co-creator also revealed details of Benedict's character in the film, villain John Harrison, and why he called the film "Into Darkness".
He said: "The characters are a group of people who have recently come together and find themselves up against this incredibly terrifying force. His name is John Harrison and he is sort of an average - that is what makes him so scary - he is just an average guy who works in an organisation called Starfleet, and he turns against the group because he has got this back-story and this kind of amazing secret agenda.
"After two very violent attacks, one in London and one in the US, our characters have to go after this guy and apprehend him. And it is a far more complicated and difficult thing then they ever anticipated.
"Into Darkness is very much about how intense it gets and really what they are up against."
Star Trek Into Darkness is due to be released in UK and US cinemas on May 17, 2013.