self-confident
adjective
[ ˌsɛlfˈkɒnfɪd(ə)nt ]
• trusting in one's abilities, qualities, and judgement.
• "a self-confident young actor"
Similar:
self-assured,
confident,
believing in oneself,
positive,
assertive,
assured,
authoritative,
commanding,
self-reliant,
self-possessed,
composed,
poised,