How to deal with career failures?

Review and rewind
If you failed in your first attempt, there must have been something that went wrong. What you must do here is to hit the rewind button and review all the steps that you took. Review your attitude, your work style, skills and ask yourself - What went wrong? Were you in the right place? Use self-belief to shape your own destiny
It's very important to cultivate a strong belief in yourself and use the same to shape your destiny, rather than wholly depending upon the ideas from others. Even if you were failed once, if you believe in yourself you will be able to inspire confidence in the people around you, which will help you on your way to achieving career success. In the meantime, you should also cultivate a capability of self-affirmation instead of fearing disapproval and being insecure. Try different strategies to improve your job performance and marketability, take on different tasks, read books, network with people in different organizations. Dealing with failure requires bouncing back and surviving setbacks. As Thomas Alva Edison said, "I have not failed. I've just found 10,000 ways that won't work."