Je n'ai besoin de rien (zhuh nay beh swahn deh ree ehn) - I don't need anything (literally: I don't have need of anything)
Repeat this phrase all day long till you know it by heart.
Vocabulary breakdown:
Je n'ai (zhuh nay) -I don't have
besoin de (beh swahn deh) - need of
rien (ree ehn) -anything, nothing