I'm a fan & practitioner of NVC, mindfulness, careful work life balance, etc for being able to treat startups as a marathon vs sprint... But I've observed people overuse & abuse these tools to rationalize prioritizing self over peers in ways that come at the direct expense of the same exact things of their colleagues. It can add up over time in a way that breeds resentment, distrust, non-collaboration, etc. Generally, risks a toxicity that taxes everyone more than the individual brings to the team. What one person needs is different from their peers, so requires some sort of empathic give-and-take, and for someone not as good at paying attention, help doing so.
In a team of high-functioning folks, a tricky line to walk! (And if people have recs here, am curious!)