It's a little weird accepting your voice coming out of an animated character. You don't buy it at first because it's your voice and none of us like our voices when we hear them recorded back.
I always feel like a doctor who loses a patient on the operating table or something where I felt just devastated and I beat myself up until I get to try it the next night and I'll get it better tonight. So I'm hard on myself. I think I'm not alone in that regard with acting.