Action by, or originating in, one's self or itself.(noun)
Gnu Collaboartive International Dictionary of English: licensed under The Code Project Open License (CPOL)
Use "self-action" in a sentence
"But there are circumstances in which such self-action is ruinous to so many that coercion from the outside becomes absolutely needed."
"At the feet of my Superior I have laid down the right of self-action — the privilege of independence."
"It was necessary that she should explain to Peter that he must take upon himself some self-action upon this occasion, and it may be doubted whether she did this with perfect good humour."