Willpower in Buddhism I don't see any other questions, in the suggestions of the site, linked with this precise topic. 

What is the equivalent of "willpower" in Buddhism? How is it developped? 

Thank you.
The term is padhana - effort, exertion, striving, as in The Four Right Exertions.

Another term is vayama, The Right Effort step of the Eightfold Path.

Another word is chanda - will or intent. 


  There is the case where a bhikkhu generates desire, endeavors, activates persistence, upholds &amp; exerts his intent for ... [specific practices]


"Generates desire" is an important phrase here. 

According to my root Guru, the key to effort is joy. If effort gets you what you're looking for, it makes you happy, then you're motivated to practice more. So the key is not as much to force oneself, but rather, to find the right narrative or frame of reference in which you feel motivated.

So in Buddhism willpower is not as much just sheer force, as it is ability to control one's attention and concentration, to not let external influences change one's frame of reference from position in which the motivation exists naturally.