In your day to day life, at work, at home, at school...wherever.
Think not - "Ah, I failed at this. I made a huge mistake." This thinking is not so useful.
Think instead - "Ah, what is my lesson to learn here? How can I now create value in my life and others' lives, based on this experience?"
Failure = self-blame, lack of self-acceptance
Lesson = ownership, opportunity for new growth