If I post a selfie, and you like it, it's of little cost to you, but it feels great to me. That becomes addictive, and you see people's narcissism so quickly. I think that's a very dangerous thing for us all to be addicted to.

I'm not a fan of the selfie. I think it's at the heart of the narcissism that social media brings into our lives.

If you can pinpoint the moments in social media that are really negative experiences, those are the ones you can cut out. And when you do, you recognize how much better your life is.

If I'm a secure person, my online persona is going to be pretty similar to the person that I am. If I'm insecure, my online persona is probably very different from who I am in real life.

If I post a selfie, and you like it, it's of little cost to you, but it feels great to me. That becomes addictive, and you see people's narcissism so quickly. I think that's a very dangerous thing for us all to be addicted to.

One of the things that makes a social-media cleanse so difficult is that every time we log on, every notification we get is an addictive substance. It's just like any drug.

We're all not exactly the same person online that we are in real life. I am not as happy as my Instagram makes me look. We are all heightening the positives and downplaying the negatives.