Anna Lembke is a psychiatrist, Chief of the Stanford Addiction Medicine Dual Diagnosis Clinic, and the author of "Dopamine Nation: Finding Balance in the Age of Indulgence." During our conversation, Anna talks about her journey to studying addiction, the downsides to dopamine surplus, modern addictions to devices and social media, what we can learn from drug addicts, the role of struggle in a healthy life, and how individuals might live wisely in our modern technological world.

I think Anna is one of the most important figures in our society. Among other things, she provides us with what a good friend does: a mirror to ourselves, our habits, and what we are becoming.