Developing the right reflexes, i.e. to "shove back" rather than freeze, is the right strategy.

But that only goes so far. 

There also has to be the developing of the right reflexes in men, i.e. not only not to approach a female stranger or employee sexually, but even in the case of your date or girlfriend, to back off as soon as she "freezes" or is reluctant in any way. Absence of shoving back is not consent.