A practitioner needs two attitudes in their efforts to be generous, to make an impact and to benefit others- humility and confidence.
The humble practitioner says, "I can do more."
"I can do better."
Contrast that with the person who thinks what they have done is enough, that they have nothing more to do.
The humble practitioner pays reverence to great teachers, profound teachings, generous acts and all those who are striving to make a difference. The act of paying reverence is a display of humility.
Contrast that with the person who bows to no one, respects nothing even as their equal.
The confident practitioner says, "I can do this."
"I can achieve that."
A humble practitioner who is endowed with confidence can do anything. And they likely will.