When you find something that looks better to you. Since you're uncertain, you can look around. If everything out there seems worse than your current job, it mak

When you find something that looks better to you. Since you're uncertain, you can look around. If everything out there seems worse than your current job, it makes sense to stay where you are. Of course when you're making this assessment, there are a bunch of unknowns about any potential new job, so it has to look significantly better to compensate for the risk you're taking (and for the overhead of switching).