A while ago I stumbled upon a simple formula which summarizes all that counts. I believe it came out of the US Marine Corps — but can’t find the reference anymore, so take the source with a grain of salt…
The Magnitude of the Challenge multiplied by the Intensity of the Attack equals your Rate of Growth.
Humans have an inert desire to grow. It is what got us to move out of our caves, build civilizations and put a man on the moon.
If the magnitude of the challenge multiplied by the intensity of the attack equals your rate of growth — why wouldn’t you pick the hardest problem you can find and tackle it as hard as you possibly can?
Time to grow.