"Fill your bowl to the brim and it will spill.
Keep sharpening your knife and it will blunt.
Chase after money and security and your heart will never unclench.
Care about people's approval and you will be their prisoner."
There is a limit to all all things. Eventually the bowl overflows, or the knife dulls, or the unexpected happens, or someone doesn't care about you. These limits are out of our control. We can choose to pretend that limits like these don't exist and mope when they catch us by surprise, or we can choose to become the master of these limits. To recognize what is enough and to set the limit at that moment puts you in control.