The idea is not to let a single day pass by without furthering your goals.
Let us say your goal is to write an app or a novel. Its time for bed and you are tired. Just don’t go to bed. Write at least a single line of code. Just one line. That is greater than zero.
Eliminating non zero days builds up discipline and momentum. That is the wind beneath your wings.
I read this thought longtime back. Came across this again today. So thought of sharing this.