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You're an inwardly-oriented person who doesn't get energized by interaction with other people like most people, but often finds it quite draining.
Don't apologize for your nature and feel like you have to correct it and become like more of the world like it's an affliction. It's just a different way of being; not better or worse; different.
Go to a good career counselor and s/he'll help you find a career that is compatible with your personality type. There are plenty of ways to exercise your curiosity and writing skills without having to work against your core being.
Librairian, researcher, analyst, appraiser, all require intellectual research, good writing, but are still more solitary work modes rather than highly interactive.