I think too many of us get into the mindset that "this is only temporary." That's the kind of short-term mindset that limits our growth and prohibits us from learning the necessary lessons we need to learn.
When the pioneers trekked across America, they knew the places they were settling were only temporary places of refuge, but they still built as if they were going to be there the rest of their lives.
We have no idea how long we are going to live, but if you plan on living forever, how would that change things? You have no idea how long you are going to be at your current job or be living where you are, or be around the people you are right now, but why not pretend (at least for right now) that it's for the rest of your life?
Wouldn't that change how you approach your day-to-day?
Wouldn't you be better off because of it?