Also, this notion of breaking in an engine "like you stole it" or "like you are racing it" is a bit of a misconception.
The idea is not to beat on the engine, but to run it at various on/off throttle loads, with plenty of wide open throttle (which is different from high RPM running, which is different still from running hard up against the redline.)
The use of this type of break in allows the rings to seat and to use the engine as it was designed, not beyond it's limits.