I'm no quitter.

I ain't no quitter.

Source: Tatoeba

I'm not that easily intimidated.

Source: Tatoeba

Don't associate yourself with people that give up easily.

Don't associate yourself with people that easily give up.

Don't hang out with people that easily give up.

Source: Tatoeba

But if you're wrong, don't give up. Because you don't know what's going to happen next. Remember, don't give up easily.

Source: Tatoeba