Never be impulsive in taking decisions.

Impulsive : acting or done without forethought.Considerable : notably large in size, amount, or extent.Cunning : having or showing skill in achieving one's ends by deceit or evasion.Clever : quick to understand, learn, and devise or apply ideas; intelligent.cautious : (of a person) careful to avoid potential problems or dangers.Antonym of Impulsive is Cautious