You can give in, you can give out, but you don't give up.
I learned more from failure than I learned from success.
One thing I hope to instill in my students is the idea that we can also learn from the mistakes of others (the main reason for studying history, in my opinion). After all, I don't have time to make all the mistakes on my own, and if I can avoid making the mistakes in the first place, I should take advantage of that opportunity.
We all have a lot to learn from the other 99.