Anecdotally, I know that myself and most of my friends deal with the impostor syndrome.
But, I also think it's important not to fall prey to what I think is the opposite problem: the narrative fallacy. It's easy to feel that you were "fated" for many positions. Or, if not some form of predestination, then some notion that things were "bound" to happen. I know that there was an enormous amount of luck in how I ended up where I am today. While your abilities may have enabled you to be in an elite pool of candidates, there may still be some random chance that landed you the position instead of one of your fellow elite candidates. I can think of three instances that afforded me opportunities that have made enormous impact on my career that were essentially luck.
What you can control is that when you are lucky, make sure you make the most of it. When fellow grad students would ask me for advice on finding jobs, the best I could do was reply, "Be lucky and be good."
But, I also think it's important not to fall prey to what I think is the opposite problem: the narrative fallacy. It's easy to feel that you were "fated" for many positions. Or, if not some form of predestination, then some notion that things were "bound" to happen. I know that there was an enormous amount of luck in how I ended up where I am today. While your abilities may have enabled you to be in an elite pool of candidates, there may still be some random chance that landed you the position instead of one of your fellow elite candidates. I can think of three instances that afforded me opportunities that have made enormous impact on my career that were essentially luck.
What you can control is that when you are lucky, make sure you make the most of it. When fellow grad students would ask me for advice on finding jobs, the best I could do was reply, "Be lucky and be good."