If people didn’t feel fear, they wouldn’t be able to protect themselves from legitimate threats. Fear is a vital response to physical and emotional danger that has been pivotal throughout human evolution, but especially in ancient times when men and women regularly faced life-or-death situations.| Psychology Today
Confidence is a belief in oneself, the conviction that one has the ability to meet life's challenges and to succeed—and the willingness to act accordingly. Being confident requires a realistic sense of one’s capabilities and feeling secure in that knowledge. Projecting confidence helps people gain credibility, make a strong first impression, deal with pressure, and tackle personal and professional challenges. It’s also an attractive trait, as confidence helps put others at ease.| Psychology Today
Stress generally refers to two things: the psychological perception of pressure, on the one hand, and the body's response to it, on the other, which involves multiple systems, from metabolism to muscles to memory. Some stress is necessary for all living systems; it is the means by which they encounter and respond to the challenges and uncertainties of existence. The perception of danger sets off an automatic response system, known as the fight-or-flight response, that, activated through hormo...| Psychology Today