As human beings blessed with the ability to meta-cognate - the ability to be aware of our thoughts, our soul, our free will - we get to utilize the creative energy of the universe in the ways we deem fit.
We all have only a finite amount of power. Our ability to work depends on this power. It is expressed also calories in the food we eat. It is the money in our bank accounts. It is the gas in the tanks of our cars. A fulcrum enables us to magnify our limited power to do a particular thing with greater effectiveness.