how do you say "never stop believing" in spanish?

Question

I want to know how to say "Don't stop believing" in Spanish. How do you say it?

Answer 1

Nunca dejes de creer.

Nunca pierdas la fe.

Nunca digas nunca.---Never say never.

Answer 2

Nunca digas nunca.---Never say never.

I see a double negative, but if you have a negative word following the verb I thought you had to have no before the verb?

Nunca no digas nunca.