You still have a shot at it.

Many times we give up too soon, many times we look at our many arrows that didn't hit the mark. You can only fail the day you stop pushing, the day you stop believing, the day you say yes to fall, when you are suppose to say no.
You can never be free from dust if you don't dust it. You must pick up yourself from the dust and try it another way. If you give in to failure you can never be call a champion.
Do not repeat the same thing over again in the same way. Ask yourself where did I get it wrong? seek wisdom through advice, education and discipline yourself by been persistent and focus. You may fail 99 times, but the only one that count is when you succeed.
Many great scientist had similar experience, but they didn't give up and that is why we call them great, because they never quit.

Image from Google.com

Never stay down, when you know that you deserve to be up. As long as you have life , you still have a shot at it. Try that business, that examination, that publication, whatever you think have lost hope on, try it again and again but in a different way and with the mindset that you will succeed. Always remember, failure is part of success. It is only when you have been tried and you are still standing that you can be call be a winner.