I believe we can all be more successful if we learn from our failures. By learning from out failures we now know what not to do. For example if you want to learn how to ride a bike, you will fail the first few times, but the more times you fail the more chance of success. You will gradually learn what and not to do to not fall. Therefore you will become successful and learn how to ride your bike.
in my opinion, failure helps you learn more than success. Success gives you limits, like you only know what to do, but you dont know what not to do. Failure teaches you what not to do for present and future mistakes. Say like if you lost a spelling bee, you would learn to study more and not waist time playing. That failure taught you what not to do, and what to do. Also, another example, if a kid is going down a slide upside down, they would fall off the slide and hit their heads on the ground, they would learn not to do that anymore and to sit up correctly.
