le lo
"The Buddhist notion of diligence is to delight in positive deeds. Its opposite, called le lo in Tibetan, has three aspects. Le lo is usually translated as "laziness," though only its first aspect refers to laziness as we usually understand it.
The first aspect is not doing something because of indolence, even though we know that it is good and ought to be done.
The second aspect is faintheartedness. This comes about when we underestimate our qualities and abilities, thinking, "I'm so incompetent and weak. It would be good to do that, but I could never accomplish it." Not having the confidence of thinking, "I can do it," we end up doing nothing.
The third aspect refers to being very busy and seeming diligent, but wasting time and energy on meaningless activities that will not accomplish anything in the long run. When we do many things for no real purpose, we fail to focus on what is truly worthwhile and our path has no clear direction.
When we refrain from these three aspects of laziness, we are diligent."

/Ringu Tulku Rinpoche from Daring Steps Toward Fearlessness: The Three Vehicles of Buddhism/

[Low self-esteem can actually be categorised as a form of laziness]