I tend to go with the height that the Army told me i was,(5'9") as it makes me feel better within myself, but who knows what height i really am?

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Ste
Well, clearly a 4 inch difference is far greater than the measurement errors one might expect when measuring height (which would be, say, plus or minus a half inch or so), or the small differences in height we experience during the day (we're a little taller in the morning). Sumthin' funny is going on there...lol.
I'm sure you know how to get a reasonably accurate height measurement if you are really interested in knowing. If you are in fact 5'5" but are claiming to be 5'9" you are going to need some awfully high heels to pull that off.