Comment by lbrito

I wouldn't focus on trying to tune your personality as that's not really sustainable. What if you get the job, are you going to continue living a second personality during working hours?

You'll never know the real reason you weren't hired anyway, so it doesn't make sense trying to focus on changing something that you don't know is a problem to begin with. You're assuming it is personality, but it could also be other things related or not to you.

Interviewing is ultimately a numbers game; you can get better at it (with the myriad interview-prep materiel out there), but you are still subject to various uncontrollable factors. The most significant thing you can do is apply to more jobs, and thus increase your odds of getting hired.