There is a great difference between mistakes and failures. Though both of them will teach you lifelong lessons, still, they are different in many ways.
Mistake is something you regret, or should I say, you should regret. You can only learn from your mistakes when you finally regret them. And not until you realized that it was a mistake, you will not learn anything from it.
Failure is inevitable. While a mistake is something you regret, failure is something you have to go through to learn. you don't have to regret when you failed, you just have to do it again.
That is their another difference...
For you should not make the same mistake twice, but if you failed... you have to do it again.
There is no glory in mistake, only redemption.
But a failure with a great attempt is glorious even in the midst of defeat.