A YouTube photographer, Madison Beach, once set herself the goal of getting 50 or 100 rejections from her photo submissions in one year.
Try thinking of applying for jobs the same way. Look at every application or interview as a step toward a goal in and of itself. Even the most qualified person is going to apply to dozens of jobs before getting a position. Each application represents another step on that path. Every interview makes you more prepared for the next.
I’ve also heard the advice that you should want to uncomfortable in any new job because that means you are challenging yourself and giving yourself the opportunity to learn and get better.
This is easy for me to say, harder for someone to follow!