Jeff Warren is a writer and a meditation teacher. He is the co-author, along with Dan Harris and Carlye Adler, of Meditation for Fidgety Skeptics, and author of The Head Trip, a travel guide to sleeping, dreaming and waking consciousness. Jeff’s specialties as a meditation guide – i.e., those things he has the most personal experience with – are obsessive over-thinking, dysregulated mood swings, emphatic-overwhelm, and ADHD-style attention-hijacking. For all these reasons, his favourite meditative principle is equanimity. He can talk forever about equanimity and frequently does, thus strategically introducing the challenge of sleepiness in all who accidentally listen to him.