The first name of Neil creates a dual nature for, on the one hand, you desire change and varied experiences in order to avoid monotony, and yet you are attuned to system, order, and attention to detail. You can be very analytical, exacting, and patient in your undertakings until your interest is exhausted, at which time you switch to something else even though it means leaving your undertakings unfinished. This name makes you inquisitive and scientific in your approach to life, requiring everything to be proved to satisfy your skepticism. You can be a stickler for detail, and very fussy and particular. As spontaneous verbal expression can be difficult for you, you often feel awkward and embarrassed in situations requiring tact and diplomacy. This name creates strong physical desires, such as an appetite for heavy, starchy foods and meat. Tension affecting the solar plexus and digestive organs could lead to ulcers, growths, or constipation.
A pretty good analysis of my personality, actually. And the constipation bit holds true too.
Thanks to oneeye for digging that out.