1. Assign your singleton in Awake#

Singletons should be initialized before other code runs, so assign a value to Instance in Awake.
See singletons to learn more about setup.

2. Do not read from a Singleton in Awake or OnEnable#

Using a singleton in Awake or OnEnable may result in reading from it before it has been initialized.

You should always attempt to configure an object in Awake, and read from its dependencies in a later method like Start.

3. Ensure the singleton exists in the scene#

1. Make sure the singleton has been added as a component on an object in the scene.
2. Make sure nothing destroys the singleton, or has destroyed it completely during a scene change.

If the singleton should persist, you may choose to use DontDestroyOnLoad to keep it around when the scene is unloaded.