I still remember an art class I had senior year in college. I was having a talk with my instructor about how frustrated I was with an oil pastel piece I'd been working on.
She said "Okay. Dig into that box of pastels and find the most putrid color you can."
I dug around and found a dirty green looking pastel.
"Now take that and color over your piece."
I was horrified "What!? "
She said, "Sometimes something has to get worse or even ruined in order to get better."
I trusted her, took a leap of faith and colored over my work.
I started anew.