I've done so many interviews that I thought went so well, and then they never called.
Eventually I found a great job, but basically before that it got to a point where I'd interview, leave, then just try not to think about it because I was sick of waiting for a call and not getting one.
Applying for jobs, doing interviews, and all that stuff is freakin' hard work, and getting nothing out of it really starts wearing on you.
In any case, best of luck happybat!