[devnonymous]

It's natural to feel disappointed when one doesn't get through an interview and one begins questioning a lot of things when this happens. This happens to almost everyone. Almost everyone has not made it through at some point or another ...be it an interview, college application, a date, a driving test, getting selected for a sports team ...

We tend to obviously be more critical of ourselves when we lose out on things like interviews because we value jobs a lot more than other things. While it is ok ...in fact, healthy even, to feel a bit depressed by rejection, this shouldn't get to the point where you spiral downwards questioning everything in your life.

Hiring is often a matter of selection based on a number of factors beyond technical skill. Irrespective of what developers believe, HR truly can could be influenced by salary expectations, date of availability, logistics (for instance, visa issues) ..etc. I do agree that most of these are non-issues for places like Google or Amazon but even then, it might be a tough call to make when companies have shortlisted 2 very strong candidates and just have 1 slot to fill (or maybe even 10 strong candidates and 4 slots ...you get the idea). The point of all this is, don't beat yourself up about it -- external factors beyond your abilities, suitability or control influence hiring decisions. Don't feel too bad if you think you did well enough at the interview. If you didn't, you now know where you were lacking.

HTH, good luck