Each letter in the personality type code - E, S, T, and P - describes a preference for a way of thinking or behaving. There are eight styles and you use all of them, but ESTPs prefer:
Extraversion (interacting with people) more than Introversion (thinking things through)
Sensing (perceiving tangible facts) more than iNtuition (perceiving new possibilities)
Thinking (making decisions using objective logic) more than Feeling (making decisions using subjective values)
Perception (a flexible lifestyle) more than Judgement (an organised lifestyle)
If your closest personality type is ESTP then you are an action oriented problem solver. You enjoy getting things done, and taking action to solve practical problems. You are in your element when there is a crisis requiring urgent action, which you are able to resolve. If you have any particular skills (e.g.: sports, crafts or sales) then you enjoy applying those skills to reach a tangible goal (winning a game, making a sale, or building something tangible).
Stereotypes and Individuality
The original author of personality type theory - Carl Gustav Jung - said that everyone is individual and unique. The personality types are not strict classifications, but stereotypes that are akin to landmarks on a map. Just as a few landmarks can help you find many unique locations, so too the personality stereotypes can help you understand your unique personality.