Abundance versus Scarcity Mindset

I can fall into the trap of a scarcity mindset.  It can seem like there isn't enough - not enough time, not enough money.  

It's a fact that there is only so much of certain things.  There's only so much iron, for example, in the earth.  But what is it used for?  Are there alternative ways to meet the same need?

If there isn't enough time, then is that an opportunity for someone else to step in and use their talents?

There are some good resources for this concept.