I promise you, a lot of it is luck. But you make your own luck by working really hard and trying lots and lots of things.

The best products in the world have a point of view. The worst products have none.

What people tell you and how they act is very, very different sometimes.

People have presences, both online and in real life. You can choose to show everything, meaning all sides of you, or you can choose to be selective.

Every startup should address a real and demonstrated need in the world. If you build a solution to a problem lots of people have, it's so easy to sell your product to the world.

Obviously, being the CEO, there are a lot of eyes on what you do and what you post and how you post, and I think one of the challenges of Instagram in general is that, as we get bigger, there are just more voices in the room, more eyes on everyone's accounts.

I always look toward teens on Instagram to really understand what's going on. For some reason, when you're a teen, you just understand the world better than anyone else.