Here is an excerpt from Great Grandmaster Tae Yun Kim‘s book, The Silent Master:
Rather than allowing your mistakes to be reasons for continuing failure, allow your mistakes to be used as learning feedback. In fact, mistakes are as real, valid, and viable as successes when you’re growing and learning.
You make mistakes any time you do something new. If you already knew how to do something without making mistakes, it wouldn’t be new! It would already be a habit. So let mistakes be friendly teachers, the fertilizer for growth.