Decisive, as suggests, make and act bold decision without hesitation.
As we all know, risk and benefits are proportional. In order to make good investment, one should not only dare to seize opportunity but also to take risks. Success can be achieved on bold and decisive action. Decision action must be built from the basis of rational thinking. Act without thinking is reckless, think without action is theoretical.
In terms of our dealings, there is a particular need for "three decisive":
First, when the opportunity arises, be decisive.
Anyone who made investments know that there are not many ideal entry point to the market every day and, once missed, there may not be another one during the day. Hence, strike the iron while is hot.
Second, decisive loss when judging errors
Anyone can have an erroneous judgement even on computer calculation. There is a "law of uncertainty" in quantum mechanics and, there is no prediction of 100% accuracy. Therefore, when one found oneself became impatient , misjudged or, the market did not follow the trend as expected; when it reached to a psychological threshold or critical point, one must dare to concede and stop loss decisively. Some others were stuck due to leave things with luck, refused to admit and dragged to the end until it became unbearable.
Third, goal to achieve a decisive surplus
First set oneself a reasonable goal, when the goal is achieved, should know enough is enough. It is impossible to earn from every day's market amplitude. Those have this idea have violated objectivity and rationality. Yet there is no lack of such investors refuse to leave when there is profit and always want to earn a little more, once the price began to callback; the more unwilling to stop surplus, and have to leave with a loss eventually.
"Decisive" corresponds with the Dharma "Six Degrees" of "Humiliation".
The so-called "endure humiliation", in the transaction it means the capability to act without hesitation, fluke and greed.