Do not,for one repulse,forget the purpose that you resolved to effort.不要只因一次挫败,就放弃你原来决心想达到的目的.

Just because you failed once,doesnt mean you have to give up your faith.
When you feel like giving up,remember why you held on for so long in the first place.
I found a quote on the internet.
“Just don’t give up trying to do what you really want to do.”Ella Fitzgerald.
这几句都是差不多意思吧.