poised

adjectives

marked by balance or equilibrium and readiness for action
"a gull in poised flight"; "George's poised hammer"
poised
is similar to
being in a state of proper equilibrium
"the carefully balanced seesaw"; "a properly balanced symphony orchestra"; "a balanced assessment of intellectual and cultural history"; "a balanced blend of whiskeys"; "the educated man shows a balanced development of all his powers"
balanced
in full control of your faculties
"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"; "strong and self-possessed in the face of trouble"
collected, equanimous, poised, self-collected, self-contained, self-possessed