Does this purchase move me closer to a sustainable way of living? In other words, does it reduce my negative impact, or increase my positive impact, with respect to the four system conditions? Are there any negative consequences of the purchase that outweigh the gains?

Does this purchase leave me with the flexibility to continue making positive impacts as my conditions change? In other words, can I keep from overcommitting resources (such as health, time, or money) that I may need or prefer to use elsewhere?

Does this purchase provide me with adequate gains, in terms of overall well-being, right now? Does it enrich my life in any meaningful way?