How much stuff do we need to live well? And is this level of resource use compatible with reducing environmental degradation, including climate change, to safer levels? This talk will provide some answers, but even more questions. For instance, what does a good life mean, from the perspective of different research disciplines? How can we go about measuring it, and making decisions that can foster it? And how can we trace our resource use, from extraction, through processing and trade, to consumption and use? Are we allowed to judge each other's consumption? Whose responsibility should it be to ensure current and future generations can flourish within the limits of our environment? This talk will showcase recent research advances, including from the "Living Well Within Limits (LiLi)" project.