“From an early age, we are all conditioned by our families, our schools, and virtually every other shaping force in our society to avoid risk. To take risks is inadvisable; to play it safe is the counsel we are accustomed both to receiving and to passing on. In the conventional wisdom, risk is asymmetrical: it has only one side, the bad side. In my experience—and all I presume to offer you today is observations drawn on my own experience, which is hardly the wisdom of the ages—in my experience, this conventional view of risk is shortsighted and often simply mistaken. My first observation is that successful people understand that risk, properly conceived, is often highly productive rather than something to avoid. They appreciate that risk is an advantage to be used rather than a pitfall to be skirted. Such people understand that taking calculated risks is quite different from being rash. This view of risk is not only unorthodox, it is paradoxical—the first of several paradoxes which I’m going to present to you today. This one might be encapsulated as follows: Playing it safe is dangerous. Far more often than you would realize, the real risk in life turns out to be the refusal to take a risk.”
Life is fraught with risk. There is no getting away from it. However we try to control the direction of our lives, there are times when we fail. Therefore, we might as well accept that life is a game of chance. If life is a game of chance, to one degree or another, we must be comfortable with assessing odds in the face of risk.
The true trader, the consistent winner, is not concerned with any price or where prices started from. He or she is concerned with what it takes for people to believe strong enough, and with enough commitment, that they will place their capital at risk.” So, with that in mind, the four basics: 
Vigilance is the non-stop guarding and protecting of important things. In trading there is nothing more important than money. The Professional Trader takes his money very seriously and has given it a more serious term: “Capital”. Capital is everything to the winning trader. It is not just the end goal, it is the means and the source before, during and after the trades. The Professional Trader guards his capital very closely because it will allow him to trade today, tomorrow, next week, next month and next year and beyond. If capital is not protected at all times, then the entire effort for the year can be gone and future opportunities are severely limited. Vigilance in trading means holding the protection of your money, your capital as your constant highest priority. Properly protecting your capital includes starting with enough to trade wisely and be able to stay in the game when the inevitable downturns and losing streaks occur. 
#1 Trading is not about winning percentage, being right all the time, or predicting the future. What it is about is having bigger winners than losers. If you are profitable after each long string of trades then you are a winning trader in that time frame. You can make money through winning percentage as long as you keep losers small and you can make money through huge wins even with lots of losses. The key is not how many times you are right but the size of your winners versus your losers. That is the magic elixir of profitability.
“Most good traders would agree that risking less than 1% of equity in a trade (where 1% is the amount you lose if your stop loss was hit) is a prudent risk. Risking between 1 and 3% gets into the gunslinging range. Risking any more than 3% is usually financial suicide, and the average trader commits financial suicide all the time without knowing it”