We have happier days. Some just 'blah' days. Humans aren't perfect. But making mistakes doesn't make you a failure. In fact, if you learn from your mistakes, you can get pretty skilled at about anything.
Many successful people make mistakes.
It's just a part of life. I think we all make mistakes. I think that's part of the human condition. You have to make mistakes to achieve something. To accomplish something, you have to first do it wrong to then do it right.