[powmonk]

Yeah, that sucks. You seem to be in a really bad place mentally though, which is going to massively amplify any feelings of rejection, so bear that in mind when you're beating yourself up. You could just be down. I found that getting help, reaching out and realising I had a problem was the biggest step in getting better. I still get depressed from time to time but I can see the signs now so it doesn't ruin my life anymore.

As for the interview, so what? Keep trying. It took multiple interviews for me to find the right fit. Not getting the job doesn't mean you are shit or worthless. Those puzzles are of questionable validity anyway, maybe the interviewer was a bit crap.

Either way, rejection is part of life, you need to pick yourself up and keep trying until you find the place you need to be. That's going to be near impossible if you're depressed though, and it sounds like you are so look for some help.

Good luck