Your type does not determine your behavior. The Myers-Briggs Type Indicator is simply a categorization of how you "prefer" to behave and even this is to some extent situation dependent as while someone might be a "E" type personality (i.e. Extraversian), after a full day at work and meeting/greeting/interacting with people - their inclination at the end of the day might be towards the "I" spectrum (Intraversian).
People generally have both competing types inside them at all times - the MBTI however simply describes which type is more likely during normal circumstances and which type you have a preference towards.
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