there is nothing wrong with breaking rapport, it is a great tool, however the problem with negs and rapport breaking in general is that when guys become new to this idea, they think a rapport break is some sort of magical series of words that somehow make a girl want to have sex with you more,
this sadly is not the case, you can not neg a girl into a blowjob, when you come in with this ''I must validate my ego and have her eating out of my palm with these magic words'' mentality, chances are you will abuse rapport breaks until you lose a few girls
http://www.youtube.com/watch?v=0tS4JgBbNBE
if you can't spot the negs in the above video, chances are, you don't know what a neg is, or how they are properly applied
a neg is simply a tool, to get attention, it doesn't make the girl like you more, it simply demonstrates an indifference to your target, you simple use a false dis-qualifier disguised as a compliment, it should sound like a genuine compliment, a neg is not a tease, it is not an insult, it is not a joke, it is a genuine compliment in the form of a disqualifier, they are most effective when a girl feels she is too important to give you her attention, or when a girl is in a negative emotional state and not willing to give you her attention, they are simply to help you grab attention better
as far as dhv's go, alot of guys think that throwing dhv spikes into a story is what a dhv is, no these are simply stories that list off times that you managed to dhv, if you want to actually dhv, then actually demonstrate the value, you can tell stories, but you should know they should seem like real stories from your life, and actually be interesting, the theory behind this is, you tell one cool and interesting story, cool! that was a cool and interesting story, if you tell lots of cool and interesting stories as a default, you are cool and interesting, but in my opinion, it is always better to demonstrate the value, rather then qualify yourself through story telling, it's simple but not easy, just be confident and interesting around people and you will naturally DHV yourself
actually be seen with pre-selection, more important then telling a story
actually be seen leading men, more important then telling a story
actually stand up for your friends, more important then telling a story
actually express your emotions without fear, emote through your tonality and body language, if people can't tell what emotion you are feeling, chances are you are not expressive enough
and last but not least,
http://en.wikipedia.org/wiki/Operant_conditioning
^ the above is what ''qualification'' is used for
to ''dhv and neg'' is not as important as what you do with the attention, you say and do interesting and emotionally stimulating things to get the target hooked on your attention, once you have that attention that goal is met, now you can begin to screen for the behavior you want and subtly try to shape it in the way that seems of most benifit, conditioning is by far more important then the neg or the dhv, learn to qualify it will serve you 1000x more then negging or telling stories
good behavior = reward
bad behavior = punish
what do you motivate your target with?, attention
how do you do this?, make your attention valueable (dhv, neg)
once the attention is valueable, it then becomes your means of a reward and a punishment to begin operant conditioning (qualification)
if girl does something you like = give her attention and affection (escalate)
if a girl does something you dislike = remove your attention and ignore her/show active dis-interest
simple as that
GOOD LUCK