It's funny: I spend time in the book criticizing social media, but I'm also aware that a lot of my success is because of social media. I can broadcast myself and my work to thousands of people that are following me or my friends. I do think that social media can be good for self-promotion.

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.

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 miss extra bits of knowledge that can add value to our lives. We sort of lack empathy because we're multitasking all the time.

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

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.