As a brand spanking new, full time position trader (finishing my fourth week) my edge is:
preserving my initial capital
knowing how much risk I am taking ($ and %)
understanding what my risk really is
what my objectives are
following my written trading plan
written business plan (almost finished)
patience
realizing being out of a market IS a position
knowing I'm in for the long haul
daily journal
making mistakes (so far small ones) and learning from them
assuming I am wrong and waiting to be proven right, instead of the other way around
double and triple checking my orders (think I'm a closet dyslexic) before sending 'em in
being able to put my losses behind me
keeping a sense of humor
knowing there is no spoon and it's all a game
and having a fully supportive wife and family (they all love Cocoa)