Setting a goal is easy, to achieve it is possible, but stopping when you reach your goal is fairly difficult and if you are unaware of this, this might revert and start demolishing all your victories. All rises has falls.
An imaginary story that would illustrate more what i am talking about:
There were two chicken birds fighting and competing between each other for a piece of food. After some minutes of severe and agressive fight there was a winner and a looser. The winner didn't ate the food and walked away, but instead he started showing off and trying to attract attention to itself that he is the most powerful bird in the region. He flies and started flapping his wings and crowning in loud voice: "I am the victorious!". Suddenly, an eagle passed and seized him in his claws and carried him to his nest. Yet he becomes the loser.
As another illustration:
In soccer games, In a tournament played in spain. There was a well known team playing at home against another team. The well known team started by scoring two goals in the first part of the game. Before starting the second part, the coach told his players :" I want you tu humiliate the other team so that to become more scary to other teams, I want you to score more goals..." The players entered the field and concentrated on attacking more than defending. Some minutes later, the loser team scored the first, the second and the third goal and they stopped counter attacks and defended they camp. At the end the well-known team lost and the other team won.
In order to be among the winners you should be among the ones who control the patterns and vary them at will. The essence of this strategy is controlling what is coming next, don't let your success make visibility unclear of what might happen. Understand that if you win, this is not permanent and you can become looser at any instance. Why first instants success can obscure your visibility? This is because what you used as strategy to achieve that success can't be the same strategy that will assure the success continuity. People and competitors arround you will analyze your moves, your tactics and your pattern and they will put obstacles in your way.
The rule is very easy: The permanent winners vary their patterns, change course, adapt to circumstances. Rather than advacing without reasoning, just going like that, until they find themseleves in front of some problems. In stead, they step back and look where they are going, if they have the right skills to continue or stop, whether they will jump into a fierceful competitor's field or a safe land,...
To sum up, the moment where you stop is what determines how long you will continue in success. The best time to stop and walk away is after victory. After achieving success and you maintained it, then think about new strategies to get ahead. In ancient history, some powerful armies lost very easy battles because they keep attacking country after the other. The lesson is once you win don't withdraw but advance with precaution.