According to Osho, resolve is a positive, creative awakening of inner strength that calmly says 'Enough' and the desire ends; repression is a negative struggle that pushes urges down while secretly feeding them through fear, fantasy, and social concern. Resolve makes you the master; repression keeps you entangled. Cultivate resolve by practicing neutral challenges (e.g., enduring cold), awakening a new force rather than wrestling old impulses.
Resolve is turning on inner strength to stop a craving; repression is trying to hold it down while still thinking about it, which makes it stronger.