Hey Chas,
Download this macro, and give it a keyboard shortcut you like.
Then activate the keyboard shortcut 20 times to get it into your muscle-memory.
Breaking from a running macro - #2 by ccstone
It's entirely possible to create a macro that can take over your computer and prevent you from doing normal keyboard or mouse input.
I did so once, and I promptly created the macro above to ensure I had a kill switch.
-Chris