self-collected
1. [ adjective ] in full control of your faculties
Synonyms: equanimous poised self-contained self-possessed collected
Examples:

"the witness remained collected throughout the cross-examination" "perfectly poised and sure of himself" "more self-contained and more dependable than many of the early frontiersmen"

Related terms: composed
Similar spelling:   self-colored
  self-centred
  self-coloured
  self-conceited
  self-contained
  self-confidence
  self-control
  self-conceitedly
  self-centered
  self-confident
  self-confessed
  self-styled
  self-complacency
  self-command
  self-centeredness
  self-conscious