"Most of us spend too much time on what is urgent and not enough time on what is important."
Imagine an empty jar sitting alongside some rocks, pebbles, and sand. Further imagine you want to get all the rock, pebbles, and sand into the jar. You start by putting all the sand into the jar, then put the pebbles on top of the sand, but you find there's no room for the rocks.
You might be thinking that this is a silly way to try to get everything in the jar. You're thinking it makes more sense to put the rocks in first. Once you do that you can drop the pebbles in and they'll fit around the rocks. Finally, the sand will fill up all the leftover space.
That makes sense, but if you're like most people you treat your life like the first scenario. We fill out time with unimportant things (sand) and struggle to make time for what's truly important (rocks).
It pays to figure out what your rocks are and make sure you put those in your jar first!
Money and Time Are Limited Resources
Let me state the obvious, you don't have unlimited money. You can't buy everything. And since you can't buy everything you have to make some choices about where you want your money to go. This is true no matter how much money you have.
Like money, you don't have unlimited time. Time on Earth is limited. If everything goes well you get to live until you're in your early 80s - longer if you have longevity in your genes. Once your time is up, there are no redos. You can't get more time once it's gone.
Probability and statistics are on your side when it comes to living a long life, but we can't ignore the fact that rare events happen, and they can happen to you and your loved ones. Accidents happen all the time and they can cut our time short.
This knowledge may make you rethink how you spend your time and who you spend it with.
We Have to Prioritize
Since you don't have unlimited time, money, or energy, you get to choose how you use your resources. Every dollar you spend shopping is a dollar that isn't available for a vacation or for retirement. A minute spent watching television is a minute you aren't working on your hobby. Sinking your energy into a social media fight means you won't have the energy to play with your kids.
In effect, by choosing "A" you are giving up "B."
You might be thinking that you can have both "A" and "B" either because you can use a credit card or because you make more money than most. And while that may be true it still misses the point. By choosing both "A" and "B" you are giving up on "C."
The point is that you can't have everything so you have to prioritize.