Everybody makes mistakes, but instead of being embarrassed or beating yourself up over them; you should embrace them. Mistakes are a gift that helps us navigate our way through life and what ever endeavors we choose to spend our time on.
Many people are so afraid to make mistakes that they do not try new things. This is partly because we are scolded from a young age when we make mistakes. The problem is that children, and adults, learn from making mistakes. It is all a part of figuring the world out for ourselves. Our creativity and ingenuity spring from the trial and error process.
There are many great advances in science and art that came from making mistakes. Electric light and the painting at the Sistine Chapel are two examples of creations that sprang from making mistakes. Walking and talking are two things that people learn in life through trial and error.
When you acquire new information on a subject, you are not instantly a master at that thing. That is not how learning works. When you learn a new subject you have to take the information and then begin applying it. A good example is playing the guitar. You have to practice this skill over and over again. During this process you will make many mistakes, but you will use those mistakes to make corrections to you technique. In the end all of those mistakes turn into mastery of a new skill.
You cannot grow without making mistakes. If you do something well the first time, chances are you are already good at it. The only want to become a better person is to stretch yourself outside of you comfort zone. This includes trying new things with which you are not familiar. With this stretching of your person comes mistakes and you should embrace them because it means that you are trying to make progress.