How do you overcome the panic of losing something you consider a 'security blanket'?

I have lost the ring that I always wear and have been really upset for a couple of days now, not just because the ring didn’t actually belong to me, but also because it was something really comforting to me. It made me feel secure and whenever I got anxious or upset I felt some comfort knowing that I had it. How can I get over this feeling in my stomach and move on, after all its just a ring.