Love this. Indeed, entrepreneurship is not for everyone. It's mainly for the restless.
Entrepreneurship is not a job; it's a way of life. Our entire lives begin to revolve around it. But many people end up treating it as another job -- only, they have to 5X as hard with less than half the pay or certainty of a cushy 9-5 job. That's why I've seen many people give up within months of taking the plunge, even when they had a good thing going.