Self-awareness is a trait - or maybe 'practice' is the more accurate way to put it - that everyone can always improve at. It is part emotional intelligence, part perceptiveness, part critical thinking. It means knowing your weaknesses, of course, but it also means knowing your strengths and what motivates you.

When you look at the reasons people leave companies, it's usually because their boss is a jerk or because they aren't learning and growing.

From the beginning, we believed that it was possible to develop direct relationships with customers at a relatively cheap cost, and our plan was to build a lifestyle brand that was also an Internet company - a rarity for eyewear.

When we were creating Warby Parker, for us it was about having a positive impact on the world and having a strong social mission.