After recently undergoing numerous job interviews and getting a glimpse at what is expected of new candidates, I felt a bit of fear for anyone starting out in the field of computer science and tech. There is just too much out there to learn.
Sometimes confidence comes from having experienced a thing many times. In the world of coding, there are times when you just needed to add a few lines of code to modify a functionality. The lesson from this experience is no matter how confident you feel your code is, always write tests.