Listen to this old timer. I'm only 32, but I've recently come to this conclusion as well around my career.

You have to be willing to let a job just be a job. No more, no less. Funnily enough, you'll often hear the same advice from older folks who own their own business. Even when the business is their own, they advise finding something else outside of the work to drive you.

The important thing is to have an invigorating activity you enjoy that is an outlet and not a chore. Work will always become a chore, that's why it's called work. Find that balance and you'll likely survive in the end.