"Numb" talks about someone who has lost himself and forgotten who he is due to the fact that other people are pressuring him into being what they want him to be. The song is being told supposedly by a young person, as the music video shows several scenes centred around a young girl and her family.
"Numb" has been interpreted as being about how young people (mainly pre-teens, teenagers) feel pressure in being able to live up to many expectations, especially relatives (most likely parents). The lyrics 'all I want to do; is be more like me and be less like you' show the much demanded freedom that most underage people would like. The message brought out from the bridge tell about the hardships that the directed person has felt.