A few times since I have started using Unity, for no apparant reason, my viewing screen is suddenly in a random place WAY off my game scene.
I wanted to know if there was some way to go back to my project without having to drag the mouse around for an hour trying to find it.
That’s weird… You can select an object from the hierarchy and press “F” to center the camera on it.
Hope this helps. 
Select an object in your scene and press “f”. It moves the view to that object.
Thanks so much!
I’ve randomly been focused thousands of points away and it takes me forever to get back.
This helps a lot 