That's a really good point, Steve! I think so often, we trip ourselves up by assuming something is more final than it is. In reality, I think it's more like a boat journey across the sea where we can course-correct along the way and even decide to head to another destination altogether.
If you start a job and don't like it, you can always quit. If you take your business in a certain direction and it makes you miserable, you can always adjust.