Some roadblocks are detours toward something better. Some are just walls, and the honest response is grief before it is optimism. The useful version of this idea is narrower. A block forces you off a route you had stopped questioning. You take the side street and find the bakery — which you would never have looked for, because the main road was working fine.
When something closes today, resist deciding immediately whether it is a gift or a loss. You don't have the information yet.
Ask instead what it has prevented that you would never have examined on your own.