Here are some quotes related to overcoming failure along with their authors:

“Our greatest glory is not in never falling, but in rising every time we fall.” – Confucius
“Failures are finger posts on the road to achievement.” – C. S. Lewis
“Only those who dare to fail greatly can ever achieve greatly.” – Robert Kennedy
“I can accept failure, everyone fails at something. But I can’t accept not trying.” – Michael Jordan
“I’ve failed over and over and over again in my life and that is why I succeed.” – Michael Jordan
“What would life be if we had no courage to attempt anything?” – Vincent Van Gogh
“It’s fine to celebrate success but it is more important to heed the lessons of failure.” – Bill Gates
“My great concern is not whether you have failed, but whether you are content with your failure.” – Abraham Lincoln
“You may have a fresh start any moment you choose, for this thing that we call ‘failure’ is not the falling down, but the staying down.” – Mary Pickford
“Failure is a detour, not a dead-end street.” – Zig Ziglar
“Remember that failure is an event, not a person.” – Zig Ziglar
“Do not let what you cannot do interfere with what you can do.” – John Wooden
“Defeat is not the worst of failures. Not to have tried is the true failure.” – George Edward Woodberry
“I don’t believe in failure. It is not failure if you enjoyed the process.” – Oprah Winfrey
“The secret of life is to fall seven times and to get up eight times.” – Paulo Coelho
“The only real failure in life is not to be true to the best one knows.” – Buddha
“It is impossible to live without failing at something unless you live so cautiously that you might as well not have lived at all, in which case you have failed by default.” – J.K. Rowling
“You build on failure. You use it as a stepping stone. Close the door on the past. You don’t try to forget the mistakes, but you don’t dwell on it. You don’t let it have any of your energy, or any of your time, or any of your space.” – Johnny Cash
“When we give ourselves permission to fail, we, at the same time, give ourselves permission to excel.” – Eloise Ristad
“Everything you want is on the other side of fear.” – Jack Canfield
“The only real mistake is the one from which we learn nothing.” – Henry Ford
“I’ve missed more than 9,000 shots in my career. I’ve lost almost 300 games. 26 times, I’ve been trusted to take the game winning shot and missed. I’ve failed over and over and over again in my life. And that is why I succeed.” – Michael Jordan

I hope you find these quotes inspiring! Let me know if you need more.