Our son is 3.5 and we have struggled to show that we make mistakes and learn from them. Taking up a new challenging skill as an adult, like guitar, also helps.

While not perfect, my son likes the Tree Fu Tom episode Zigzoo the Zero where a character who is an inventor learns that making mistakes is an important part of learning. Available on Netflix and Google Play.

Our son definitely has perfectionist tendencies, but it is slowly getting better.

Now if I can only teach him to lose better... We are getting there... 3 is challenging...