For me, in both cases, it's looking at great art. Amazing art. Absolutely earth-shatteringly brilliant art. It motivates me because I want to make something just as good but it also destroys my motivation and confidence because I start to think that I'll never make anything as good.
Same. If I have one of those moments I just think wow, this makes me want to go off and create something beautiful, but then a while later I'll remember that I'm not nearly as talented as I'd like to be. It's pretty rare that I set out to work on something and end up with the result that I envisioned in my mind.