Aw, I'm very sorry to hear this. Getting over the loss of a pet is not easy, but like any wound, time will heal it. Give yourself time to grieve and cry if you need to, it can be good for you. Try not to lull over it though. You could ask yourself how your pet would feel if they saw you sad over them. I don't know your beliefs and all, but they will be in a better place, and they'll be thankful for the life they got to live with you, as I am sure you will be thankful as well. Let memories be memories, and don't let them hold you back from living your life. A good way I like to cope is by writing about a memory I had with my pet and turning it into a mini story with funny or happy aspects. It may not work for you, but I might as well offer up the suggestion. I hope you feel better soon though, and my deepest condolences to you and your pet.