As a manager, as a leader, you must pay attention to both of these things.
The next time you catch yourself in a cycle of worrying or planning your days away, gently take a step out of time to check in with your mind and body to see how you're doing.
Accepting a situation does not mean you are giving up.
What they had discovered was that even the extremely smart, high-powered employees at Google needed a psychologically safe work environment to contribute the talents they had to offer.
In some cultures it's entirely appropriate to show emotions during a negotiation.