Every day is an investment
You're not lucky to have this job, they're lucky to have you. Every day, you invest a little bit of yourself into your work, and one of the biggest choices available to you is where you'll be making that investment.
That project that you're working on, or that boss you report to... worth it?
Investing in the wrong place for a week or a month won't kill you. But spending ten years contributing to something that you don't care about, or working with someone who doesn't care about you... you can do better.