'Self-command' definitions:

Definition of 'self-command'

From: WordNet
noun
The trait of resolutely controlling your own behavior [syn: self-control, self-possession, possession, willpower, will power, self-command, self-will]

Definition of 'Self-command'

From: GCIDE
  • Self-command \Self`-com*mand"\, n. Control over one's own feelings, temper, etc.; self-control. [1913 Webster]