Use things to last, don’t abuse them. Always start and finish in the best possible way for long lifespan.
Use things for their full lifespan. In many cases just because a newer better version of an item exists, is not a valid reason to replace it. If a working version is in possession, continue using it until it can’t be used anymore.
Repair or repurpose things which would otherwise be considered to be at the end of their life. This may give a whole new life, and void the need to replace it.
Don’t acquire things that wont last. When considering to purchase or come into possession of something, consider how long you will likely need it for. If you wont need it much or potentially at all, and it is just nice to have, consider not getting it, or finding a temporary solution such as borrowing it from someone else. And if the quality appears to be so low that you can’t get a reasonable life of use out of it, look for better quality.
Don’t pay for more than the minimum if the quality is the same. Vanity and popularity lead to irrational purchase & acquisition justifications. Just because the brand appears to be more prestigious, or the design is more attractive, the cost may not actually justify a tangible increase of value, rather speculative. In such cases consider how long the more expensive yet not higher quality item will last compared to its economical competition. If the difference is marginal or even worse, purchase for lifespan. The total cost of ownership could be twice as much on an item which has the same return of value of its entire lifespan.