I'm lucky that I could refine my skills through those first three businesses. If Treehouse was my first big idea, I'd have no choice. I'd just have to do the best I could.

> What changed when you did treehouse vs those other smaller businesses? Was it the fact that you didn't need to worry about money in the short-term anymore (because of those small exits), or something else?

I didn't make quite enough from those exits to be financially independent, so I still need to make Treehouse work from a money perspective personally.

The simple thing that changed was the scope of the idea. It was world-changing scale - millions of potential lives affected.