How do I get over the feeling that people would think of me as Inadequate?

I had a job interview today. I think I did okay. I was not exceptional but I answered all questions appropriately. I seem to engage well with the interviewer. But after I am done with that I can’t get over the thought that the interviewer thinks I am amateurish, not good enough. I feel shame and embarrassment. I realize I do not have any objective evidence to prove that this is what she might have thought or felt about me. But how do I get over the bad feeling or emotion I have in my heart. I am tired of feeling that.