Door: Don't Open, Don't Close

Doors open and doors close,
but that just seems to be the problem.

I lost my job the other day;
quite glad since I didn't like it much.
I went home and started to worry
but got a call and was informed I was promoted.

Last week my dog strayed and got lost,
as we were playing in the park.
I headed home, starting to feel lonely,
but saw a girl giving away newborn puppies.

A new job, a new dog, a new life.
A door closes and a door opens,
but that just seems to be the problem...
...I miss the view from my old door.