Your iPhone-wielding urchin can take more selfies in an afternoon than all the self-portraits ever produced by Rembrant, van Gogh and Picasso. Those snapshots, like the “mirror phase,” can help
build a healthy self-image, say experts — but they also caution that excessive instant gratification may have long-term consequences. To help budding narcissists get over themselves,practice patience while reviewing their work, teach them to include others in their photographs, and incorporate the images into a bedtime story. If the self-obsession reaches Kardashian proportions, you can always opt for the nuclear option.