Putting so much self worth into a single job application strikes me as unhealthy. Hiring decisions are have absurdly high variance. Everyone I know has been rejected from a job that seemed like a perfect, usually many times over. I'd say that's far more common than actually getting a given job.
Steve Yegge has a great story about Google HR doing an exercise with the eng hiring committee where they reviewed their own anonymized interview packets and they decided not to hire 40% of themselves.
particularly at these high prestige companies where open roles are likely to get thousands of applicants