Yes, set them free. Be at peace with them being in your life, and also be at peace with them not being in your life, because one day, they may not be. Your primary source of love and comfort is yourself.
That's what i did.....Anyway we should remember what Abraham says: "Only you can hurt you - the only person in your way is you."
Aint that the truth? My Molly has been gone two years this month and it feels like shes still with me. I think of her every single day and I feel her walking beside me wherever I go. Good thing otherwise I would just be sad all the time.