“A lion is fully capable of capturing, killing and eating a field mouse. But it turns out that the energy required to do so exceeds the caloric content of the mouse itself.
So a lion that spent its day hunting and eating field mice would slowly starve to dead. A lion can’t live on field mice.
A lion needs an antelope. Antelope are big animals.
They take more speed and strength to capture and kill, and once killed, they provide a feast for the lion and her pride.
A lion can live a long and happy life on a diet of antelope.
The distinction is important. Are you spending all your time and exhausting all your energy catching field mice?
In short term it might give you a nice, rewarding feeling. But in the long run, you’re going to die.
So ask yourself at the end of the day, “Did I spend today chasing mice or hunting antelope?”