We all make mistakes; however, there is a right way to deal with them.
To err may be human, but we are still afraid to admit when we are wrong. When we make an error, most of us fall into one of two groups; those who have a fixed mindset and think, "screw it, I'll never be good at this" and even try to shut out the mistake altogether, or those who have a growth mindset and view an error as a "wake-up call", and analyze what went wrong. It's easier for the "wake-up call" group to get back on their feet.
An out of town friend phoned to remind me when she was scheduled to arrive at my home. Then I realized I had completely forgotten I had invited her for the weekend. I spent the entire evening wondering "How could I forget a person"? The following morning, I cleared my calendar and apologized to those I had double booked. I tried to look at this error as a wakeup call to remind myself not to take on too much. Could I actually welcome the mistake? It seemed like a stretch, but for once, an honest oversight didn't feel like a black mark on my soul. I fixed what I could and stopped obsessing about the rest!