Never say die:

You can say "Never say die!" if you want to tell someone to keep trying while there's still a chance of success.

We were two goals down with only a few minutes to go, but our captain wouldn't give up. He was shouting, "Come on, guys! Never say die!"

After falling off his surfboard for the hundredth time, Craig climbed back on and said with a laugh, "Never say die!"

Persian:نا امید نشدن