Eating lunch away from the desk is a small, unimpressive form of loyalty to yourself. Twenty minutes, no screen, and the afternoon runs differently.
Nurture is what you'd do for anyone in your care. Feed them, let them sleep, don't speak to them the way you speak to yourself at midnight over a mistake from March.
Always will break sometimes. There are weeks that take everything you have. The promise isn't perfect coverage. It's that you return to it, and that returning doesn't require a crisis first.