One of the key things I've learned is to make coming and going a non-event. Luckily I've not had a problem with anxiety but have seen it in a couple of my fosters. One of them would just sit and stare at the front door. I hated to leave him..it just broke my heart. I have heard from his new family that it is no longer an issue with him. My guys get a treat and I don't say anything as I walk away. They are left behind a puppy gate in the family room and don't see me leave the house as I go through the garage door. When I come home I don't immediately greet them and I don't immediately give them any treats. I want the treats to be associated by my leaving not my coming home.
The other thing I did the first few times I left was listen at the door. I could hear Jake barking and would stand there until I didn't hear him anymore. Once I realized he only barked for 5 minutes or so I felt okay leaving and knowing that he did settle down.
Loving mom to Jake, Shelby and Micah