By telling ourselves to "leave" something that's weighing us down (figuratively or otherwise), we then, too, have the opportunity to move on to other things. We can't undo what's transpired. But we can move on if we choose to.
Here in New York state, where the market for pet store puppies is enormous, it makes sense to allow our towns and cities to take steps to protect animals and consumers. It makes sense, but in New York state, it's illegal.