Defeat is just having a better insight to react better next time, if you can. It should help to move on. Defeat should not be a source of despair, but a fresh start. Defeat is a school where truth is always stronger.
The truth that is going to show you the path. Be a better person, enjoy to help people. The truth is most valuable things that you have is your time. If you start to listen people, you cannot change the result. They cannot give you the things that do not have: Wisdom.
For many artists at the beginning of their career, I have noticed that they had to learn communication through their art. We are the only creatures that has to invent a language to communicate. We are able to use letters, shapes to share our ideas. The basics of great communication skills run universal through all disciplines. If you fail, there must be a good reason that you have to improve things. Without defeat, it is nearly impossible to improve. It is just a part of the process.
Take a break, rest and try again.