It's easy for founders to get stuck in the short-term thinking of "how do I keep my startup alive" and, after months or years of this, end up with a business th

It's easy for founders to get stuck in the short-term thinking of "how do I keep my startup alive" and, after months or years of this, end up with a business that isn't going to grow and they don't enjoy or feel passionate about running. I believe this is what Aaron means when he talks about "Zombie startups". It's a pretty common state for startups to get into. In those situations, it's better to shut it down and move onto something else then stay working on it simply because of momentum. Every year of your life is a huge opportunity cost.