Taste becomes personal after imitation stops choosing for you.

For a long time your preferences are borrowed: from your family, your friends, whatever was around, whatever signalled the right things. That is a necessary apprenticeship, not a fault. Taste only becomes yours when you can tell the difference between liking something and liking what liking it says about you.

Pick something you claim to love and ask whether you would still love it if no one ever knew. The honest answers will thin your list and what survives will be genuinely yours, which is a far more useful thing to own.