When I graduated from school, I had the same fear of not knowing enough. I went through a similar hell of reviewing the same concepts over and over again hoping something would change.

And three years later, after landing multiple jobs and growing in each of them, I'm still terrified of flunking an interview. xD

So you're absolutely right, you just have to put yourself out there, and learn with every experience (even the failed interviews).

This was a wonderful reminder. Thank you John! :)