The quote means that someone should have a light-hearted attitude towards their own life and mistakes. It suggests that we can all make mistakes or have embarrassing moments, yet we shouldn’t be too hard on ourselves. Instead, we should be able to laugh a little at our own flaws and find the humor in life. Having a sense of humor about ourselves doesn’t mean we don’t take ourselves seriously or care for ourselves, it just suggests we have the courage to look at life with a more positive and accepting attitude.