In my younger years, I was always devastated every time I made a mistake or messed something up. It always felt like the world was going to crash in around me. Then I had a really rough patch in my life and had to learn to be kinder to myself. I decided that I would start living my life 80-20 and it is certainly a much easier way to live.
This is what it means...
The biggest part of this way of living is that you have to accept that we are all human and we can all learn to be kinder to ourselves. We are all good and bad, smart and stupid, happy and sad, organized and disorganized, prompt and tardy... and it is okay!
Do well 80% of the time and forgive yourself for the 20% that you are not.