Tools of the Trade
A professional-grade deli slicer and other meat-manipulating power tools
A set of high-quality knives
An apron (preferably striped) and gloves
Software for record keeping (or physical books, if you prefer to go all Stone Age)
A serious respect for safety—both your own and your customers'
A pair of good shoes that will keep you comfortable while you're on your feet all day
An eye for detail (from inspection to slicing, quality is key)