Failure, specifically within IFATC, is always the beginning of a path to success. Some are ashamed of their failures, but I am here to tell you that failure is not something to be ashamed of.
The best controllers are ones who have failed countless times, learned from their mistakes, and applied their learning and newly gained perspective to their controlling. Be it radar training or local controlling, failure is totally natural. What matters is that you learn from it!
During my radar training, I failed KGJT 3 times, KONT and YSCB once each, and made several other mistakes at various airports. At the time, these seemed like crushing mistakes, and I didn’t see myself progressing any farther. However, each time, I came back again with a positive attitude and motivation to succeed, and eventually made it through all of those airports. Coming back and nailing the airports I struggled at previously was an incredible feeling, and those failures were the experiences that proved to be the most useful to me and my controlling. Looking back now, I am proud to say that I failed several airports.
Don’t be afraid to fail. We all fail at one point or another. Learn from your mistakes!