You’ve got to earn money in the markets to be able to keep it from the markets. For example, if a trader who takes on large position risks makes a bundle of money, he will eventually lose it all because the manner in which he made the money will also be the way in which he loses it all. To earn money in the markets you must trade conservatively with your capital and limit your equity and position risks; when your positions start to show profits you must let those positions run up.
– William Eng, Trading Rules II
