Do not be afraid to make mistakes. Be careful not to see your mistakes
Mistakes are natural part of our lives so you need to see them as something that happened out of a reason and that reason is for you needing to learn about something. View mistakes as constructive as possible, this way you won’t get too disappointed when it comes to you making one.
Sometimes mistakes may dissuade us from continuing our jobs so you need to adopt a positive world view and instead of feeling sad. You need to look for the best ways to correct the mistake and to make sure you learn the right way so that in the future you wouldn’t commit the same mistake (or at least if you do, you do it with a lower frequency).
When you make a mistake all you need to do is to observe the main cause of the mistake. If it’s a human error, then all you need is to pay more attention and to ensure you are well rested before work. If it’s a result of lack of knowledge, then what’s needed is for you to take on learning.