ROCD and MOTIVATION

Hello! Here I am again! I’d like to ask a question about ROCD in my case. How can I truly find the strength — what can motivate me? How do I even begin to heal when my own mind keeps telling me: "You don’t want her, it’s not worth suffering anymore, just let it go!" And if you were to ask me, I’d say the exact same things! So how exactly am I supposed to find that strength?