If you've got an idea, start today. There's no better time than now to get going.

Instagram was created because there was no single place dedicated to giving your mobile photos a place to live and to be seen.

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.

With Instagram, the focus is on the present tense.

We're just taking people and shifting them from taking photos anyway to taking them on Instagram.

I have a pretty random life. I run a business and go all over the world doing things for that business, things that are fairly orthogonal. But my job is to run my company, not to be the best Instagrammer. I'll let other people be awesome at it.

If you've got an idea, start today. There's no better time than now to get going. That doesn't mean quit your job and jump into your idea 100 percent from day one, but there's always small progress that can be made to start the movement.