Listener question: loss and grief

I loved your analogy about marriage being like a car which can loose its purpose (besides looking pretty in the driveway). On a similar line I was thinking of past relationships like old dresses which became too small in size and are not my style anymore but still hang in my closet. The closet gets so full that no more new clothes fit in - no more new ones fit in and at the same time I cannot wear the old ones. Back to the relationships in this analogy: I still remember all the birthdays, the dates when we first met, all the places which remind me of them. Even that I do not want to be together with any of these past relationships when I am in my analytical mind. But there is so much grief and sadness, looking at these dresses, and knowing I will never fit in ever again. Any thoughts about how to process grief and sadness….