(n.) Reliance on one's own powers or judgment; self-trust.

Declaration of Independence arrogance assurance assuredness autarchy autarky autonomy belief boastfulness certitude cocksureness conceit confidence confidentness conviction courage face faith haughtiness home rule hubris independence individualism inner-direction overconfidence oversureness overweening overweeningness pardonable pride poise pomposity positiveness pride pridefulness proudness purse-pride rugged individualism security self-assurance self-confidence self-consequence self-containment self-determination self-direction self-esteem self-government self-importance self-respect self-sufficiency settled belief stiff-necked pride stiff-neckedness subjective certainty sureness surety trust vanity