Growth mindset

I would like to share a flash back that came ‘uninvited’ in my head recently that provoked a beautiful realisation.
My math teacher at school was perceived as a rather provocative, extremely clever and unpredictable person. He was always giving for our exams those crazy problems that only ‘Einstein’ brains would be able to solve.
As a believer of growth mindset, I had the tendency to put quite some effort in what I did, trusting I could learn anything.