Great one. Hope, you'll be in. :)
In fact starting to work on startup having a hope to have some valueable stock in the future is like starting to work on your own project with some differences. While you work on your own project, you'll always have a chance to make a pivot and to change something you don't like. If you work for someone, you have to be sure that they're reasonable to pivot when it's necessary and that they will listen to your ideas and appreciate your help etc.