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.

Social media has a way of changing your mood. I can see a picture of my ex, and it ruins my day.

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.

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.

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.

We get one of these little pings on our smartphones, and we get a little hit of dopamine as well. We get excited. We feel anticipation. As we feel this, we want it more and more. So we spend more and more time looking at our phones.

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.