When you have a lack of confidence, it will affect your self esteem and stop you from honouring your self-worth; this causes your frequency to resonate lower.
It is reported that depression affects one in ten people. Someone with depression will experience intense feelings of anxiety, hopelessness and helplessness, and may feel suicidal.
Much of this ability comes when you have a rock solid foundation of belief, love and respect in yourself.
You will always reflect back to you in your experience, what you currently hold in your beliefs.