[ApolloFortyNine]

You don't, so just make sure you leave for the right reasons.

And truly the right reasons are whatever you want them to be. It could be solely pay, wanting to try something new, or being tired of your current job. If you're sick of your current job, as you've noticed with your coworkers, it doesn't really go away. Sometimes the only way to see how good you have it is to leave and experience it yourself. You either stay miserable or take a chance elsewhere.

Just make sure you leave in good standing and you likely could even come back down the line, hiring is infinitely easier when you've worked with the candidate before.