"And what is right effort?
It’s when a mendicant generates enthusiasm, tries, makes an effort, exerts the mind, and strives so that bad, unskillful qualities don’t arise.
They generate enthusiasm, try, make an effort, exert the mind, and strive so that bad, unskillful qualities that have arisen are given up.
They generate enthusiasm, try, make an effort, exert the mind, and strive so that skillful qualities that have not arisen do arise.
They generate enthusiasm, try, make an effort, exert the mind, and strive so that skillful qualities that have arisen remain, are not lost, but increase, mature, and are fulfilled by development.
This is called right effort."
Saṁyutta Nikāya 45.8 Vibhaṅgasutta: Analysis by Bhikkhu Sujato



