...where it seems that everything you do sucks?
Yeah, me too.
Sometimes I look at my work and all I see are my mistakes, stuff that is wrong, off or otherwise out of whack.
I tend to be my own worst critic. I think part of this has to do with being a creative person and knowing every single stroke of the pen or pencil intimately. I KNOW where all the mess ups are, even if the AD doesn't see it.
It's pretty rare when I submit a piece of work and am actually satisfied with the result. Usually I reach a point in the work where I have to draw a line and call it complete, like it or not due to my level of ability weighed against time constraints. I haven't had an AD come back yet that was unhappy with my work...or at least they haven't said so. I still work with all the ADs I've done work for in the past, so my assumption is that i must be doing okay.
That said, OKAY isn't good enough. I know I can do better. I draw every single day, and some parts get easier...some parts I still struggle with.
I think that the problem is just me: I'm never satisfied with my work. It really doesn't matter how well I do...I still see the flaws. I think that's why I do depend on outside critique (and kudos). I have a hard time patting myself on the back.