You have your vocation and you have your advocation
- Author's mentor
You need something that takes care of the bills.
And you have something (at least I hope you have something) that you care about. A larger thing that matters to you.
Very rarely, you can put the two together and turn them into the same thing. Your dayjob - the thing that pays the bills - is the thing you truly care about.
But for the rest of us (as in, just about everyone else), those two things remain separate. And that's okay.
By all means, you should enjoy your dayjob to some extent. There's too much need in the world for you to squander your time in work that's not satisfying to some degree. Move on and let someone else take that spot.
But that doesn't mean that you are your job. You are not your job. You are not the thing you do to pay your bills. You are the decisions you make, the choices you take, the people you spend your time with, the things you do when you're not making your money. That's the person that is missed when you die. Not the person who "was always on-time at meetings" and "really gave it her best; even took calls some nights".
If you die while you're still employed, your team will feel a pang of sorrow. Some will actually, genuinely, miss you. But then they'll move on. They'll backfill you (or not) and the team, the company, they'll move on. In a few years you won't even be a memory.
Do you think your friends and family will act the same way? I certainly hope not.