As with everything, you need confidence and belief in what you do. If it's not there, then your audience won't believe in you. And just because you're not your idol, your inspiration... doesn't mean you're not wonderful in your own special way.
Listening to your instinct is equal in importance. Do what comes naturally. Be yourself. And believe you're worthy.
I'm referring mostly to my photography, but this is so true with motherhood and relationships too... and many other things.
We spend so much time comparing ourselves, seeking reassurance from others, and thinking we 'should' be doing this, or looking like her or him, taking photos like that, and putting my baby to sleep like the book says, etc.
When really we should be spending that time and energy on being who we already are, in pursuing our strengths, in loving ourselves, in loving others.