I don't know what the hell I did I just want to get back to modelling
Save and close your file, fully close Blender and then open a new Blender instance with the correct default layout.
Then go to File > Open and browse to open your desired file, but before you open uncheck the Load UI option on the bottom left of the File Browser window.
If when you open Blender by default the layout is already messed up you may have to delete your
Startup.blend file from the user preferences folder either under
Blender/2.##/configfor portable installations or under
%APPDATA%\Blender Foundation\Blender\2.##\configfor formal installation, generally under
C:\Users\<UserName>\AppData\Roaming\Blender Foundation\Blender\<VersionNumber>\configfor Windows users