'Maybe "don't be afraid of mistakes" is the best thing for me to remember.'

That's brilliant, Keiko! We've been so accustomed to trying to do things perfectly, the best we can, better than before, and so on, that we dread mistakes. Yet, as you so truly note, you learn a lot from mistakes. In fact, many times a mistake turns out to take us to a new depth, understanding, creative corner-turning. Almost as if too much thinking and "editing" can bottled up and suppress the essential freedom that our vision has in store for us and for our works.