I once had an instructor in art school named Rod Corder. He was a fashion illustration teacher, and I am NOT an illustrator. I can't fucking draw.
anyway, in class demos or even one-on-one help, whenever he'd draw, every time he lay down a stroke, he'd ooh and ahhh. "Oh, that's wonderful!" "wow, beautiful!"
In addition to being a good illustrator (none of which I picked up), he gave me this little attitude to carry around. When I feel shitty about what I'm doing, I often speak to myself in his voice.
It's retarded, but it makes me laugh, and it sort of works sometimes.
Once your stroke is down, it's down, you might as well love it and move forward.