Its okay to fail.
I fail sometimes too. Its normal. No one was ever born perfect and everybody is bound to fail at some point of their lives. Even the smartest man out there has failed once or twice.
Don't fret. This isn't the end and it will never be the end. This is just a stepping stone - something that will make you stronger and smarter. So don't be sad anymore.
The people who will read this won't understand. They'll think they do but they don't. This is for you and you're the only one who can truly understand the meaning behind these words.
*The image above isn't mine. Picture from found on tumblr. I don't know how to properly cite a picture's source fml.