Verified Quote

Persistence is to the character of man what carbon is to steel - Brian Tracy
At its core, this quote means that persistence isn't just a nice quality to have, it's the essential, non-negotiable element that gives your character its strength and durability, much like carbon does for steel.

Verified Quote

Pain is temporary. Quitting lasts forever - Michael Matthews
At its core, this quote is about the temporary nature of struggle versus the permanent consequence of surrender. It's a mental model for pushing through discomfort by changing your perspective on time.