The Collaborative International Dictionary of English v.0.48:
Self-command \Self`-com*mand"\, n. Control over one's own feelings, temper, etc.; self-control. [1913 Webster]WordNet (r) 3.0 (2006):
self-command n 1: the trait of resolutely controlling your own behavior [syn: self-control, self-possession, possession, willpower, will power, self-command, self-will]