LOL! And see! You just did something productive (focusing on what you are learning) while getting PAID!
I'm glad you are taking steps to find a career that better suits you. When you do hear back from this other job prospect... Will you get to travel, too?
I'm the same way about job interviews. I hate them! I suppose that's why I'm self-employed. I always get the job when I interview myself.
Here's something to think about when you have to interview (or do anything else you are afraid of doing): Focus on the THRILL, not the FEAR.
For example, if you snow ski and are attempting a large slope for the first time, you will not be successful if you focus on how you might get hurt or killed along the way or start questioning your ability to successfully get to the bottom in one piece when you are half way down. Instead, focus on your ability, what you've learned on smaller slopes, and concentrate on applying those skills to the larger slope. And, enjoy the thrill of accomplishing it.
As far as having no confidence, you DO have some confidence or you wouldn't be working at all. You never would have had one successful interview that got you your current position.
So, change "I have no confidence" to "I have confidence in my ability to interview for a new job." Every time you hear that negative "No confidence" trying to enter your brain, change it to the positive. Then, follow it up with an even bigger thought.
I have no confidence when it comes to interviews.
Becomes, I have confidence in my ability to interview for a new job.
Follow that with "I have confidence in my ability to interview for a new job, and will get the job I want.
(Feel free to add "If the jerk ever gets back here to interview me and save me from this hell" if you must.)