I’ve dropped the ball. I’ve forgotten things. I’ve failed, not done my best, didn’t get back to people in time.
Some times it will take a while to recover from those things, or to improve yourself to where you now know better/different. But don’t hide from it. Keep on.
It might be something you can learn from and improve (which might take months to learn), or it might be a struggle you have personally. It’s okay. Just keep trying and moving.
It matters more what you do next.