The finer things.
This poor skill probably seems counter-intuitive. In fact, it took me a few years to believe it myself. There are certain things that you should splurge on in order to save money in the long-run. At the time, purchasing something cheap may seem like a great idea when one is strapped for cash. However, spending slightly more can mean that the product will last you much, much longer. Ofcourse, this is not always the case. For instance, take the example of my umbrella. I purchased it for $3 at Family Dollar and, lo and behold, it didn't hold up past the first rain storm. I purchased a different one there and again, I pretty much just threw $3 in the trash. I wondered why I didn't just buy a durable umbrella the first time. After all, I could have used those $6 toward the purchase of a nicer umbrella that would have lasted. The same thing applies to many, many other things. Sometimes it's better to just purchase that nicer product because it will be a better investment in the long term.