You never step back and take a look inside yourself and ponder your shortcomings, instead you minimise, alter or deny them. You are not vigorously honest with yourself. You never pause and observe your behaviour without judgement. You are too busy taking everyone else's inventory, yet not willing to take your own.
Confidence isn't the easiest adjective to explain. But if I were to attempt to simplify it, I would say that confidence is a state of mind. Being confident is about possessing the ability to believe in yourself and what you are capable of. It's also about being able to trust in other people and an uncertain future.
Building a healthy self esteem can do wonders for your life. The way you deal with people on a personal and professional level are all affected by how you perceive yourself. Having a low level of self confidence may greatly affect your life; you end up having a harder time performing at work, maintaining healthy relationships, and enjoying life.
When I was little I was unsure about everything and fretted about anything. If the cat was sick. If my teacher wasn't on form. If my parents were unhappy. Sometimes I would come away from talking to someone who was negatively charged and feel inexplicably down. They would say something slightly critical and I would feel annihilated.