Source : Webster's Revised Unabridged Dictionary (1913)

Self-control \Self`-con*trol"\, n.
   Control of one's self; restraint exercised over one's self;
   self-command.

Source : WordNet®

self-control
     n 1: the act of denying yourself; controlling your impulses [syn:
           {self-denial}, {self-discipline}]
     2: the trait of resolutely controlling your own behavior [syn:
        {self-possession}, {possession}, {willpower}, {self-command},
         {self-will}]