Oh man, THIS.I get production depression but it has nothing to do with what your talking about. For me it's all about how I personally feel about my tunes, and a lot of the time I get bummed on where I'm at with my ideas and my output into the world of music. Especially when my best friend makes some of the most amazing/original music I have ever heard, he has always been ten steps ahead of me with music as far as style and skill go, hes an amazing drummer electronic musician. To bad he never puts out his old shit, I honestly think he would explode in the hiphop scene if he ever put it out for people to hear.
My output is pretty much zero in terms of 'real' musical output, I play around and have fun for myself, and every track is better (I say every track, every... whatever it is I am doing, I never finish tracks, it's like a curse) but my mate is just insanely talented, he will chuck something new over and I will be like 'er... you did what now?'
This is made all the more annoying by his insistence that he isn't really that good, and that perhaps dubstep isn't really his thing, when he has just ripped out a disgusting bass frenzy straight in my face.
I hate him. Totally feel your pain man!