Something that runs out for everybody

​Your most scarce resource is time. No matter how rich you are, time runs out for everybody.
The base of the opportunity cost is that the time you invest doing something, you can’t spend it doing something else.
That’s why choosing carefully what you focus on makes a critical difference. The books you read, the career you perform, the country you travel to, and the people you hang out with.
It’s not about spending all the hours doing only one activity. It’s about having a strategic mind and choose carefully.
What and who charges your battery?
What activities are you making?
What change do you want to make?