Building Self-Confidence

I am having trouble developing self confidence without it being connected to my past experience, skills.

Instead of an innate confidence in myself, I want to think I am enough, with or without my skills, experience.

How can I untie my confidence to my skills?

C: I am applying for a leadership position
T: I have never done a position like this, but I want this position to gain the experience. The other candidates have more experience than I do, why would they every pick me? But how can I be “enough” or grow my skills with out the experience this job offers?
F: not enough, inexperienced. inadequate , little
A: nervous, racing thoughts during interview, jumbled thoughts, hesitant to apply for more positions
R: not confident, regret , hesitant to apply for more leadership roles, very nervous during interviews.