This rule never worked for me, because I, like some sort of analogy machine, like to use analogies. And like is a good word to place emphasis on before making an analogy.
I live with someone who uses like far to often it's almost a speech impediment. Of course, he doesn't notice it and I'm learning to ignore it. However on the flip side, when I can't think of what I want to say next (and that is also often) I just go silent, frequently leaving my conversation partner puzzled and sometimes they ask to repeat what I said.
edit: grammar.
Remember, language is just a more refined form of making random noises. (Also, think about how easy it is to remember the lyrics songs you've listened to over and over again. The imitation part of your brain is very strong.)
Right, I think I did a bad job of conveying my point, which was monologing is generally not a natural way to speak, therefore most people learn to monolog and can go into that mode, same with reciting, though it is less of a conscious act, reciting is a form of learned behavior and therefore has events and patterns that you can draw on to reproduce ans suppress impulsiveness, at least for me that is how it works. With spontaneous dialog, again for me, it is less structured, and is more thought oriented, I therefore seems to bounce around more in that particular situation, more than other more unnatural and therefore learned forms of speaking. The "like" I most definitely picked up as a learned word from my environment (a surfing town), the fact that I use it as conjunctions and commas, I think is my own doing.