[briga]

Ironically in my latest job search the interview I prepared the least for was the one that led to an offer. Put aside the pressure you put on yourself to succeed and you'll probably end up doing alright. I think it's similar to dating--the more effort you put into being liked by the other person the more desperate you seem and the more likely you are to be rejected. If the interviewer detects that you desperately need the job and are just saying what they want to hear, they'll probably be more likely to reject you. Not a hard and fast rule by any means, more like a quirk of human psychology.

[jasaloo]

Sure. Some people can pull that off. Doesn’t sound like OPs problem.

Also there’s a difference between over-preparing and coming in with a desperate attitude. You’re right that if you have the latter, you’re fucked. Going in with confidence, curiosity, and detachment are important too.