Mark MBTI Personality Type: ISTJ or ISTP?

Mark is an ISTJ personality type and 4w3 in Enneagram. Read 2 discussions on Mark

Does an ISTP Deserve Connection?, IxTx Finding My Personality Type

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Read The ISTP Myers Briggs Personality Type Book A practical guide to understanding the ISTP MBTI personality type by Florence Davis available from

The ISTP Myers Briggs Personality Type Book ebook by Florence Davis - Rakuten Kobo

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