I totally get this, but what really hit me and helped me get over this was college. A zero on a test I hadn’t studied for and decided to just skip cause I was embarrassed was much worse for my overall grade than a 50% or whatever it was. It also pushed me to do better on the next one. My first year of college netted me like a 2.0 GPA and when I finally went back a few years later this strategy led to my 3.9 GPA. I wasn’t smarter or anything, but I changed my mindset.