It creates happiness. It creates wonderful relationships. It creates career opportunities and fulfilling employment.
And the lack of it often undermines all these.
The “it” is confidence. You’re entitled to feel it because the infinite created you for its own self-expression. This infinite, or divine Love, is totally delighted with her conception and her specific, spiritual perception of you. Divine Love is inherently confident being, and it is speaking to you–vitalizing your consciousness, embracing you in Her goodness and warmth at every moment, including this one.
This divine Love is empowering you now to express its own capacities of intelligence, creativity, peace, humor and appropriate authority. Because She is confident in you, you have an innate capacity to feel, and the right to feel, confident in yourself.
Even when you screw up, even when you disappoint other people or yourself–the basis of your confidence goes right on. It’s a spiritual basis–your beautiful, wonderful, capable, powerfully good self as divine Love has already created you, is knowing you, and is empowering you TODAY.
Here is an idea on which you can base your self-confidence:
“God expresses in man [this is generic, including both sexes] the infinite idea forever developing itself, broadening and rising higher and higher from a boundless basis.” (Mary Baker Eddy, Science and Health with Key to the Scriptures)
Click this link to read this passage, lines 9-15.
The following 3 pages or so include lots of other spiritual-confidence-building ideas and practices.