All terms in this list:

Effective: Having the power to produce a result or a symptom.
Active
Adequate
Competent

Defective: Having one or more flaws
Imperfect
Faulty
Flawed

Habit: An action that you repeat regularly and can't quit very easily.
Routine
Tradition
Custom

Perception: An opinion on what you think of something or your belief.
Attitude
Thought
Approach

Paradigm: A set of forms all pertaining to the same main topic.
Chart
Pattern
Prototype

Fickle: Not being reliable.
Insincere
Unpredictable
Unstable

Hero: A person that shows bravery or courage. Someone you look up to.
Protagonist
Knight
Warrior

Principles: Many primary or general laws.
Rule
Truth
Ethic

Honest: A person is given this descriptive word if there statements are the truth.
Authentic
Forthright
True

Confidence: The expression of feeling self-assured or full of courage.
Certain
Positive
Fearless